HWSVMR0.cpp@ 14945

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1	/* $Id: HWSVMR0.cpp 14945 2008-12-03 14:14:27Z vboxsync $ */
2	/** @file
3	* HWACCM SVM - Host Context Ring 0.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Sun Microsystems, Inc.
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
18	* Clara, CA 95054 USA or visit http://www.sun.com if you need
19	* additional information or have any questions.
20	*/
21
22
23	/*******************************************************************************
24	* Header Files *
25	*******************************************************************************/
26	#define LOG_GROUP LOG_GROUP_HWACCM
27	#include <VBox/hwaccm.h>
28	#include "HWACCMInternal.h"
29	#include <VBox/vm.h>
30	#include <VBox/x86.h>
31	#include <VBox/hwacc_svm.h>
32	#include <VBox/pgm.h>
33	#include <VBox/pdm.h>
34	#include <VBox/err.h>
35	#include <VBox/log.h>
36	#include <VBox/selm.h>
37	#include <VBox/iom.h>
38	#include <VBox/dis.h>
39	#include <VBox/dbgf.h>
40	#include <VBox/disopcode.h>
41	#include <iprt/param.h>
42	#include <iprt/assert.h>
43	#include <iprt/asm.h>
44	#include <iprt/cpuset.h>
45	#include <iprt/mp.h>
46	#include "HWSVMR0.h"
47
48	/*******************************************************************************
49	* Internal Functions *
50	*******************************************************************************/
51	static int SVMR0InterpretInvpg(PVM pVM, PCPUMCTXCORE pRegFrame, uint32_t uASID);
52
53	/*******************************************************************************
54	* Global Variables *
55	*******************************************************************************/
56	/* IO operation lookup arrays. */
57	static uint32_t const g_aIOSize[4] = {1, 2, 0, 4};
58
59	/**
60	* Sets up and activates AMD-V on the current CPU
61	*
62	* @returns VBox status code.
63	* @param pCpu CPU info struct
64	* @param pVM The VM to operate on. (can be NULL after a resume!!)
65	* @param pvPageCpu Pointer to the global cpu page
66	* @param pPageCpuPhys Physical address of the global cpu page
67	*/
68	VMMR0DECL(int) SVMR0EnableCpu(PHWACCM_CPUINFO pCpu, PVM pVM, void *pvPageCpu, RTHCPHYS pPageCpuPhys)
69	{
70	AssertReturn(pPageCpuPhys, VERR_INVALID_PARAMETER);
71	AssertReturn(pvPageCpu, VERR_INVALID_PARAMETER);
72
73	/* We must turn on AMD-V and setup the host state physical address, as those MSRs are per-cpu/core. */
74
75	#ifdef LOG_ENABLED
76	SUPR0Printf("SVMR0EnableCpu cpu %d page (%x) %x\n", pCpu->idCpu, pvPageCpu, (uint32_t)pPageCpuPhys);
77	#endif
78
79	/* Turn on AMD-V in the EFER MSR. */
80	uint64_t val = ASMRdMsr(MSR_K6_EFER);
81	if (!(val & MSR_K6_EFER_SVME))
82	ASMWrMsr(MSR_K6_EFER, val \| MSR_K6_EFER_SVME);
83
84	/* Write the physical page address where the CPU will store the host state while executing the VM. */
85	ASMWrMsr(MSR_K8_VM_HSAVE_PA, pPageCpuPhys);
86
87	return VINF_SUCCESS;
88	}
89
90	/**
91	* Deactivates AMD-V on the current CPU
92	*
93	* @returns VBox status code.
94	* @param pCpu CPU info struct
95	* @param pvPageCpu Pointer to the global cpu page
96	* @param pPageCpuPhys Physical address of the global cpu page
97	*/
98	VMMR0DECL(int) SVMR0DisableCpu(PHWACCM_CPUINFO pCpu, void *pvPageCpu, RTHCPHYS pPageCpuPhys)
99	{
100	AssertReturn(pPageCpuPhys, VERR_INVALID_PARAMETER);
101	AssertReturn(pvPageCpu, VERR_INVALID_PARAMETER);
102
103	#ifdef LOG_ENABLED
104	SUPR0Printf("SVMR0DisableCpu cpu %d\n", pCpu->idCpu);
105	#endif
106
107	/* Turn off AMD-V in the EFER MSR. */
108	uint64_t val = ASMRdMsr(MSR_K6_EFER);
109	ASMWrMsr(MSR_K6_EFER, val & ~MSR_K6_EFER_SVME);
110
111	/* Invalidate host state physical address. */
112	ASMWrMsr(MSR_K8_VM_HSAVE_PA, 0);
113
114	return VINF_SUCCESS;
115	}
116
117	/**
118	* Does Ring-0 per VM AMD-V init.
119	*
120	* @returns VBox status code.
121	* @param pVM The VM to operate on.
122	*/
123	VMMR0DECL(int) SVMR0InitVM(PVM pVM)
124	{
125	int rc;
126
127	pVM->hwaccm.s.svm.pMemObjVMCBHost = NIL_RTR0MEMOBJ;
128	pVM->hwaccm.s.svm.pMemObjIOBitmap = NIL_RTR0MEMOBJ;
129	pVM->hwaccm.s.svm.pMemObjMSRBitmap = NIL_RTR0MEMOBJ;
130
131	/* Allocate one page for the host context */
132	rc = RTR0MemObjAllocCont(&pVM->hwaccm.s.svm.pMemObjVMCBHost, 1 << PAGE_SHIFT, true /* executable R0 mapping */);
133	if (RT_FAILURE(rc))
134	return rc;
135
136	pVM->hwaccm.s.svm.pVMCBHost = RTR0MemObjAddress(pVM->hwaccm.s.svm.pMemObjVMCBHost);
137	pVM->hwaccm.s.svm.pVMCBHostPhys = RTR0MemObjGetPagePhysAddr(pVM->hwaccm.s.svm.pMemObjVMCBHost, 0);
138	ASMMemZeroPage(pVM->hwaccm.s.svm.pVMCBHost);
139
140	/* Allocate 12 KB for the IO bitmap (doesn't seem to be a way to convince SVM not to use it) */
141	rc = RTR0MemObjAllocCont(&pVM->hwaccm.s.svm.pMemObjIOBitmap, 3 << PAGE_SHIFT, true /* executable R0 mapping */);
142	if (RT_FAILURE(rc))
143	return rc;
144
145	pVM->hwaccm.s.svm.pIOBitmap = RTR0MemObjAddress(pVM->hwaccm.s.svm.pMemObjIOBitmap);
146	pVM->hwaccm.s.svm.pIOBitmapPhys = RTR0MemObjGetPagePhysAddr(pVM->hwaccm.s.svm.pMemObjIOBitmap, 0);
147	/* Set all bits to intercept all IO accesses. */
148	ASMMemFill32(pVM->hwaccm.s.svm.pIOBitmap, PAGE_SIZE*3, 0xffffffff);
149
150	/* Allocate 8 KB for the MSR bitmap (doesn't seem to be a way to convince SVM not to use it) */
151	rc = RTR0MemObjAllocCont(&pVM->hwaccm.s.svm.pMemObjMSRBitmap, 2 << PAGE_SHIFT, true /* executable R0 mapping */);
152	if (RT_FAILURE(rc))
153	return rc;
154
155	pVM->hwaccm.s.svm.pMSRBitmap = RTR0MemObjAddress(pVM->hwaccm.s.svm.pMemObjMSRBitmap);
156	pVM->hwaccm.s.svm.pMSRBitmapPhys = RTR0MemObjGetPagePhysAddr(pVM->hwaccm.s.svm.pMemObjMSRBitmap, 0);
157	/* Set all bits to intercept all MSR accesses. */
158	ASMMemFill32(pVM->hwaccm.s.svm.pMSRBitmap, PAGE_SIZE*2, 0xffffffff);
159
160	/* Erratum 170 which requires a forced TLB flush for each world switch:
161	* See http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/33610.pdf
162	*
163	* All BH-G1/2 and DH-G1/2 models include a fix:
164	* Athlon X2: 0x6b 1/2
165	* 0x68 1/2
166	* Athlon 64: 0x7f 1
167	* 0x6f 2
168	* Sempron: 0x7f 1/2
169	* 0x6f 2
170	* 0x6c 2
171	* 0x7c 2
172	* Turion 64: 0x68 2
173	*
174	*/
175	uint32_t u32Dummy;
176	uint32_t u32Version, u32Family, u32Model, u32Stepping, u32BaseFamily;
177	ASMCpuId(1, &u32Version, &u32Dummy, &u32Dummy, &u32Dummy);
178	u32BaseFamily= (u32Version >> 8) & 0xf;
179	u32Family = u32BaseFamily + (u32BaseFamily == 0xf ? ((u32Version >> 20) & 0x7f) : 0);
180	u32Model = ((u32Version >> 4) & 0xf);
181	u32Model = u32Model \| ((u32BaseFamily == 0xf ? (u32Version >> 16) & 0x0f : 0) << 4);
182	u32Stepping = u32Version & 0xf;
183	if ( u32Family == 0xf
184	&& !((u32Model == 0x68 \|\| u32Model == 0x6b \|\| u32Model == 0x7f) && u32Stepping >= 1)
185	&& !((u32Model == 0x6f \|\| u32Model == 0x6c \|\| u32Model == 0x7c) && u32Stepping >= 2))
186	{
187	Log(("SVMR0InitVM: AMD cpu with erratum 170 family %x model %x stepping %x\n", u32Family, u32Model, u32Stepping));
188	pVM->hwaccm.s.svm.fAlwaysFlushTLB = true;
189	}
190
191	/* Allocate VMCBs for all guest CPUs. */
192	for (unsigned i=0;i<pVM->cCPUs;i++)
193	{
194	pVM->aCpus[i].hwaccm.s.svm.pMemObjVMCB = NIL_RTR0MEMOBJ;
195
196	/* Allocate one page for the VM control block (VMCB). */
197	rc = RTR0MemObjAllocCont(&pVM->aCpus[i].hwaccm.s.svm.pMemObjVMCB, 1 << PAGE_SHIFT, true /* executable R0 mapping */);
198	if (RT_FAILURE(rc))
199	return rc;
200
201	pVM->aCpus[i].hwaccm.s.svm.pVMCB = RTR0MemObjAddress(pVM->aCpus[i].hwaccm.s.svm.pMemObjVMCB);
202	pVM->aCpus[i].hwaccm.s.svm.pVMCBPhys = RTR0MemObjGetPagePhysAddr(pVM->aCpus[i].hwaccm.s.svm.pMemObjVMCB, 0);
203	ASMMemZeroPage(pVM->aCpus[i].hwaccm.s.svm.pVMCB);
204	}
205
206	return VINF_SUCCESS;
207	}
208
209	/**
210	* Does Ring-0 per VM AMD-V termination.
211	*
212	* @returns VBox status code.
213	* @param pVM The VM to operate on.
214	*/
215	VMMR0DECL(int) SVMR0TermVM(PVM pVM)
216	{
217	for (unsigned i=0;i<pVM->cCPUs;i++)
218	{
219	if (pVM->aCpus[i].hwaccm.s.svm.pMemObjVMCB != NIL_RTR0MEMOBJ)
220	{
221	RTR0MemObjFree(pVM->aCpus[i].hwaccm.s.svm.pMemObjVMCB, false);
222	pVM->aCpus[i].hwaccm.s.svm.pVMCB = 0;
223	pVM->aCpus[i].hwaccm.s.svm.pVMCBPhys = 0;
224	pVM->aCpus[i].hwaccm.s.svm.pMemObjVMCB = NIL_RTR0MEMOBJ;
225	}
226	}
227	if (pVM->hwaccm.s.svm.pMemObjVMCBHost != NIL_RTR0MEMOBJ)
228	{
229	RTR0MemObjFree(pVM->hwaccm.s.svm.pMemObjVMCBHost, false);
230	pVM->hwaccm.s.svm.pVMCBHost = 0;
231	pVM->hwaccm.s.svm.pVMCBHostPhys = 0;
232	pVM->hwaccm.s.svm.pMemObjVMCBHost = NIL_RTR0MEMOBJ;
233	}
234	if (pVM->hwaccm.s.svm.pMemObjIOBitmap != NIL_RTR0MEMOBJ)
235	{
236	RTR0MemObjFree(pVM->hwaccm.s.svm.pMemObjIOBitmap, false);
237	pVM->hwaccm.s.svm.pIOBitmap = 0;
238	pVM->hwaccm.s.svm.pIOBitmapPhys = 0;
239	pVM->hwaccm.s.svm.pMemObjIOBitmap = NIL_RTR0MEMOBJ;
240	}
241	if (pVM->hwaccm.s.svm.pMemObjMSRBitmap != NIL_RTR0MEMOBJ)
242	{
243	RTR0MemObjFree(pVM->hwaccm.s.svm.pMemObjMSRBitmap, false);
244	pVM->hwaccm.s.svm.pMSRBitmap = 0;
245	pVM->hwaccm.s.svm.pMSRBitmapPhys = 0;
246	pVM->hwaccm.s.svm.pMemObjMSRBitmap = NIL_RTR0MEMOBJ;
247	}
248	return VINF_SUCCESS;
249	}
250
251	/**
252	* Sets up AMD-V for the specified VM
253	*
254	* @returns VBox status code.
255	* @param pVM The VM to operate on.
256	*/
257	VMMR0DECL(int) SVMR0SetupVM(PVM pVM)
258	{
259	int rc = VINF_SUCCESS;
260	SVM_VMCB *pVMCB;
261
262	AssertReturn(pVM, VERR_INVALID_PARAMETER);
263
264	Assert(pVM->hwaccm.s.svm.fSupported);
265
266	for (unsigned i=0;i<pVM->cCPUs;i++)
267	{
268	pVMCB = (SVM_VMCB *)pVM->aCpus[i].hwaccm.s.svm.pVMCB;
269	AssertMsgReturn(pVMCB, ("Invalid pVMCB\n"), VERR_EM_INTERNAL_ERROR);
270
271	/* Program the control fields. Most of them never have to be changed again. */
272	/* CR0/3/4 reads must be intercepted, our shadow values are not necessarily the same as the guest's. */
273	/* Note: CR0 & CR4 can be safely read when guest and shadow copies are identical. */
274	if (!pVM->hwaccm.s.fNestedPaging)
275	pVMCB->ctrl.u16InterceptRdCRx = RT_BIT(0) \| RT_BIT(3) \| RT_BIT(4);
276	else
277	pVMCB->ctrl.u16InterceptRdCRx = RT_BIT(0) \| RT_BIT(4);
278
279	/*
280	* CR0/3/4 writes must be intercepted for obvious reasons.
281	*/
282	if (!pVM->hwaccm.s.fNestedPaging)
283	pVMCB->ctrl.u16InterceptWrCRx = RT_BIT(0) \| RT_BIT(3) \| RT_BIT(4);
284	else
285	pVMCB->ctrl.u16InterceptWrCRx = RT_BIT(0) \| RT_BIT(4) \| RT_BIT(8);
286
287	/* Intercept all DRx reads and writes by default. Changed later on. */
288	pVMCB->ctrl.u16InterceptRdDRx = 0xFFFF;
289	pVMCB->ctrl.u16InterceptWrDRx = 0xFFFF;
290
291	/* Currently we don't care about DRx reads or writes. DRx registers are trashed.
292	* All breakpoints are automatically cleared when the VM exits.
293	*/
294
295	pVMCB->ctrl.u32InterceptException = HWACCM_SVM_TRAP_MASK;
296	#ifndef DEBUG
297	if (pVM->hwaccm.s.fNestedPaging)
298	pVMCB->ctrl.u32InterceptException &= ~RT_BIT(X86_XCPT_PF); /* no longer need to intercept #PF. */
299	#endif
300
301	pVMCB->ctrl.u32InterceptCtrl1 = SVM_CTRL1_INTERCEPT_INTR
302	\| SVM_CTRL1_INTERCEPT_VINTR
303	\| SVM_CTRL1_INTERCEPT_NMI
304	\| SVM_CTRL1_INTERCEPT_SMI
305	\| SVM_CTRL1_INTERCEPT_INIT
306	\| SVM_CTRL1_INTERCEPT_RDPMC
307	\| SVM_CTRL1_INTERCEPT_CPUID
308	\| SVM_CTRL1_INTERCEPT_RSM
309	\| SVM_CTRL1_INTERCEPT_HLT
310	\| SVM_CTRL1_INTERCEPT_INOUT_BITMAP
311	\| SVM_CTRL1_INTERCEPT_MSR_SHADOW
312	\| SVM_CTRL1_INTERCEPT_INVLPG
313	\| SVM_CTRL1_INTERCEPT_INVLPGA /* AMD only */
314	\| SVM_CTRL1_INTERCEPT_TASK_SWITCH
315	\| SVM_CTRL1_INTERCEPT_SHUTDOWN /* fatal */
316	\| SVM_CTRL1_INTERCEPT_FERR_FREEZE; /* Legacy FPU FERR handling. */
317	;
318	/* With nested paging we don't care about invlpg anymore. */
319	if (pVM->hwaccm.s.fNestedPaging)
320	pVMCB->ctrl.u32InterceptCtrl1 &= ~SVM_CTRL1_INTERCEPT_INVLPG;
321
322	pVMCB->ctrl.u32InterceptCtrl2 = SVM_CTRL2_INTERCEPT_VMRUN /* required */
323	\| SVM_CTRL2_INTERCEPT_VMMCALL
324	\| SVM_CTRL2_INTERCEPT_VMLOAD
325	\| SVM_CTRL2_INTERCEPT_VMSAVE
326	\| SVM_CTRL2_INTERCEPT_STGI
327	\| SVM_CTRL2_INTERCEPT_CLGI
328	\| SVM_CTRL2_INTERCEPT_SKINIT
329	\| SVM_CTRL2_INTERCEPT_WBINVD
330	\| SVM_CTRL2_INTERCEPT_MWAIT_UNCOND; /* don't execute mwait or else we'll idle inside the guest (host thinks the cpu load is high) */
331	;
332	Log(("pVMCB->ctrl.u32InterceptException = %x\n", pVMCB->ctrl.u32InterceptException));
333	Log(("pVMCB->ctrl.u32InterceptCtrl1 = %x\n", pVMCB->ctrl.u32InterceptCtrl1));
334	Log(("pVMCB->ctrl.u32InterceptCtrl2 = %x\n", pVMCB->ctrl.u32InterceptCtrl2));
335
336	/* Virtualize masking of INTR interrupts. (reads/writes from/to CR8 go to the V_TPR register) */
337	pVMCB->ctrl.IntCtrl.n.u1VIrqMasking = 1;
338	/* Ignore the priority in the TPR; just deliver it when we tell it to. */
339	pVMCB->ctrl.IntCtrl.n.u1IgnoreTPR = 1;
340
341	/* Set IO and MSR bitmap addresses. */
342	pVMCB->ctrl.u64IOPMPhysAddr = pVM->hwaccm.s.svm.pIOBitmapPhys;
343	pVMCB->ctrl.u64MSRPMPhysAddr = pVM->hwaccm.s.svm.pMSRBitmapPhys;
344
345	/* No LBR virtualization. */
346	pVMCB->ctrl.u64LBRVirt = 0;
347
348	/** The ASID must start at 1; the host uses 0. */
349	pVMCB->ctrl.TLBCtrl.n.u32ASID = 1;
350
351	/** Setup the PAT msr (nested paging only) */
352	pVMCB->guest.u64GPAT = 0x0007040600070406ULL;
353	}
354	return rc;
355	}
356
357
358	/**
359	* Injects an event (trap or external interrupt)
360	*
361	* @param pVM The VM to operate on.
362	* @param pVMCB SVM control block
363	* @param pCtx CPU Context
364	* @param pIntInfo SVM interrupt info
365	*/
366	inline void SVMR0InjectEvent(PVM pVM, SVM_VMCB pVMCB, CPUMCTX pCtx, SVM_EVENT* pEvent)
367	{
368	#ifdef VBOX_STRICT
369	if (pEvent->n.u8Vector == 0xE)
370	Log(("SVM: Inject int %d at %RGv error code=%02x CR2=%RGv intInfo=%08x\n", pEvent->n.u8Vector, (RTGCPTR)pCtx->rip, pEvent->n.u32ErrorCode, (RTGCPTR)pCtx->cr2, pEvent->au64[0]));
371	else
372	if (pEvent->n.u8Vector < 0x20)
373	Log(("SVM: Inject int %d at %RGv error code=%08x\n", pEvent->n.u8Vector, (RTGCPTR)pCtx->rip, pEvent->n.u32ErrorCode));
374	else
375	{
376	Log(("INJ-EI: %x at %RGv\n", pEvent->n.u8Vector, (RTGCPTR)pCtx->rip));
377	Assert(!VM_FF_ISSET(pVM, VM_FF_INHIBIT_INTERRUPTS));
378	Assert(pCtx->eflags.u32 & X86_EFL_IF);
379	}
380	#endif
381
382	/* Set event injection state. */
383	pVMCB->ctrl.EventInject.au64[0] = pEvent->au64[0];
384	}
385
386
387	/**
388	* Checks for pending guest interrupts and injects them
389	*
390	* @returns VBox status code.
391	* @param pVM The VM to operate on.
392	* @param pVCpu The VM CPU to operate on.
393	* @param pVMCB SVM control block
394	* @param pCtx CPU Context
395	*/
396	static int SVMR0CheckPendingInterrupt(PVM pVM, PVMCPU pVCpu, SVM_VMCB pVMCB, CPUMCTX pCtx)
397	{
398	int rc;
399
400	/* Dispatch any pending interrupts. (injected before, but a VM exit occurred prematurely) */
401	if (pVCpu->hwaccm.s.Event.fPending)
402	{
403	SVM_EVENT Event;
404
405	Log(("Reinjecting event %08x %08x at %RGv\n", pVCpu->hwaccm.s.Event.intInfo, pVCpu->hwaccm.s.Event.errCode, (RTGCPTR)pCtx->rip));
406	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatIntReinject);
407	Event.au64[0] = pVCpu->hwaccm.s.Event.intInfo;
408	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
409
410	pVCpu->hwaccm.s.Event.fPending = false;
411	return VINF_SUCCESS;
412	}
413
414	if (pVM->hwaccm.s.fInjectNMI)
415	{
416	SVM_EVENT Event;
417
418	Event.n.u8Vector = X86_XCPT_NMI;
419	Event.n.u1Valid = 1;
420	Event.n.u32ErrorCode = 0;
421	Event.n.u3Type = SVM_EVENT_NMI;
422
423	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
424	pVM->hwaccm.s.fInjectNMI = false;
425	return VINF_SUCCESS;
426	}
427
428	/* When external interrupts are pending, we should exit the VM when IF is set. */
429	if ( !TRPMHasTrap(pVM)
430	&& VM_FF_ISPENDING(pVM, (VM_FF_INTERRUPT_APIC\|VM_FF_INTERRUPT_PIC)))
431	{
432	if ( !(pCtx->eflags.u32 & X86_EFL_IF)
433	\|\| VM_FF_ISSET(pVM, VM_FF_INHIBIT_INTERRUPTS))
434	{
435	if (!pVMCB->ctrl.IntCtrl.n.u1VIrqValid)
436	{
437	if (!VM_FF_ISSET(pVM, VM_FF_INHIBIT_INTERRUPTS))
438	LogFlow(("Enable irq window exit!\n"));
439	else
440	Log(("Pending interrupt blocked at %RGv by VM_FF_INHIBIT_INTERRUPTS -> irq window exit\n", (RTGCPTR)pCtx->rip));
441
442	/** @todo use virtual interrupt method to inject a pending irq; dispatched as soon as guest.IF is set. */
443	pVMCB->ctrl.u32InterceptCtrl1 \|= SVM_CTRL1_INTERCEPT_VINTR;
444	pVMCB->ctrl.IntCtrl.n.u1VIrqValid = 1;
445	pVMCB->ctrl.IntCtrl.n.u8VIrqVector = 0; /* don't care */
446	}
447	}
448	else
449	{
450	uint8_t u8Interrupt;
451
452	rc = PDMGetInterrupt(pVM, &u8Interrupt);
453	Log(("Dispatch interrupt: u8Interrupt=%x (%d) rc=%Rrc\n", u8Interrupt, u8Interrupt, rc));
454	if (RT_SUCCESS(rc))
455	{
456	rc = TRPMAssertTrap(pVM, u8Interrupt, TRPM_HARDWARE_INT);
457	AssertRC(rc);
458	}
459	else
460	{
461	/* Can only happen in rare cases where a pending interrupt is cleared behind our back */
462	Assert(!VM_FF_ISPENDING(pVM, (VM_FF_INTERRUPT_APIC\|VM_FF_INTERRUPT_PIC)));
463	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatSwitchGuestIrq);
464	/* Just continue */
465	}
466	}
467	}
468
469	#ifdef VBOX_STRICT
470	if (TRPMHasTrap(pVM))
471	{
472	uint8_t u8Vector;
473	rc = TRPMQueryTrapAll(pVM, &u8Vector, 0, 0, 0);
474	AssertRC(rc);
475	}
476	#endif
477
478	if ( pCtx->eflags.u32 & X86_EFL_IF
479	&& (!VM_FF_ISSET(pVM, VM_FF_INHIBIT_INTERRUPTS))
480	&& TRPMHasTrap(pVM)
481	)
482	{
483	uint8_t u8Vector;
484	int rc;
485	TRPMEVENT enmType;
486	SVM_EVENT Event;
487	RTGCUINT u32ErrorCode;
488
489	Event.au64[0] = 0;
490
491	/* If a new event is pending, then dispatch it now. */
492	rc = TRPMQueryTrapAll(pVM, &u8Vector, &enmType, &u32ErrorCode, 0);
493	AssertRC(rc);
494	Assert(pCtx->eflags.Bits.u1IF == 1 \|\| enmType == TRPM_TRAP);
495	Assert(enmType != TRPM_SOFTWARE_INT);
496
497	/* Clear the pending trap. */
498	rc = TRPMResetTrap(pVM);
499	AssertRC(rc);
500
501	Event.n.u8Vector = u8Vector;
502	Event.n.u1Valid = 1;
503	Event.n.u32ErrorCode = u32ErrorCode;
504
505	if (enmType == TRPM_TRAP)
506	{
507	switch (u8Vector) {
508	case 8:
509	case 10:
510	case 11:
511	case 12:
512	case 13:
513	case 14:
514	case 17:
515	/* Valid error codes. */
516	Event.n.u1ErrorCodeValid = 1;
517	break;
518	default:
519	break;
520	}
521	if (u8Vector == X86_XCPT_NMI)
522	Event.n.u3Type = SVM_EVENT_NMI;
523	else
524	Event.n.u3Type = SVM_EVENT_EXCEPTION;
525	}
526	else
527	Event.n.u3Type = SVM_EVENT_EXTERNAL_IRQ;
528
529	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatIntInject);
530	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
531	} /* if (interrupts can be dispatched) */
532
533	return VINF_SUCCESS;
534	}
535
536	/**
537	* Save the host state
538	*
539	* @returns VBox status code.
540	* @param pVM The VM to operate on.
541	* @param pVCpu The VM CPU to operate on.
542	*/
543	VMMR0DECL(int) SVMR0SaveHostState(PVM pVM, PVMCPU pVCpu)
544	{
545	NOREF(pVM);
546	NOREF(pVCpu);
547	/* Nothing to do here. */
548	return VINF_SUCCESS;
549	}
550
551	/**
552	* Loads the guest state
553	*
554	* NOTE: Don't do anything here that can cause a jump back to ring 3!!!!!
555	*
556	* @returns VBox status code.
557	* @param pVM The VM to operate on.
558	* @param pVCpu The VM CPU to operate on.
559	* @param pCtx Guest context
560	*/
561	VMMR0DECL(int) SVMR0LoadGuestState(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
562	{
563	RTGCUINTPTR val;
564	SVM_VMCB *pVMCB;
565
566	if (pVM == NULL)
567	return VERR_INVALID_PARAMETER;
568
569	/* Setup AMD SVM. */
570	Assert(pVM->hwaccm.s.svm.fSupported);
571
572	pVMCB = (SVM_VMCB *)pVCpu->hwaccm.s.svm.pVMCB;
573	AssertMsgReturn(pVMCB, ("Invalid pVMCB\n"), VERR_EM_INTERNAL_ERROR);
574
575	/* Guest CPU context: ES, CS, SS, DS, FS, GS. */
576	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_SEGMENT_REGS)
577	{
578	SVM_WRITE_SELREG(CS, cs);
579	SVM_WRITE_SELREG(SS, ss);
580	SVM_WRITE_SELREG(DS, ds);
581	SVM_WRITE_SELREG(ES, es);
582	SVM_WRITE_SELREG(FS, fs);
583	SVM_WRITE_SELREG(GS, gs);
584	}
585
586	/* Guest CPU context: LDTR. */
587	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_LDTR)
588	{
589	SVM_WRITE_SELREG(LDTR, ldtr);
590	}
591
592	/* Guest CPU context: TR. */
593	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_TR)
594	{
595	SVM_WRITE_SELREG(TR, tr);
596	}
597
598	/* Guest CPU context: GDTR. */
599	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_GDTR)
600	{
601	pVMCB->guest.GDTR.u32Limit = pCtx->gdtr.cbGdt;
602	pVMCB->guest.GDTR.u64Base = pCtx->gdtr.pGdt;
603	}
604
605	/* Guest CPU context: IDTR. */
606	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_IDTR)
607	{
608	pVMCB->guest.IDTR.u32Limit = pCtx->idtr.cbIdt;
609	pVMCB->guest.IDTR.u64Base = pCtx->idtr.pIdt;
610	}
611
612	/*
613	* Sysenter MSRs (unconditional)
614	*/
615	pVMCB->guest.u64SysEnterCS = pCtx->SysEnter.cs;
616	pVMCB->guest.u64SysEnterEIP = pCtx->SysEnter.eip;
617	pVMCB->guest.u64SysEnterESP = pCtx->SysEnter.esp;
618
619	/* Control registers */
620	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_CR0)
621	{
622	val = pCtx->cr0;
623	if (!CPUMIsGuestFPUStateActive(pVCpu))
624	{
625	/* Always use #NM exceptions to load the FPU/XMM state on demand. */
626	val \|= X86_CR0_TS \| X86_CR0_ET \| X86_CR0_NE \| X86_CR0_MP;
627	}
628	else
629	{
630	/** @todo check if we support the old style mess correctly. */
631	if (!(val & X86_CR0_NE))
632	{
633	Log(("Forcing X86_CR0_NE!!!\n"));
634
635	/* Also catch floating point exceptions as we need to report them to the guest in a different way. */
636	if (!pVCpu->hwaccm.s.fFPUOldStyleOverride)
637	{
638	pVMCB->ctrl.u32InterceptException \|= RT_BIT(X86_XCPT_MF);
639	pVCpu->hwaccm.s.fFPUOldStyleOverride = true;
640	}
641	}
642	val \|= X86_CR0_NE; /* always turn on the native mechanism to report FPU errors (old style uses interrupts) */
643	}
644	/* Always enable caching. */
645	val &= ~(X86_CR0_CD\|X86_CR0_NW);
646
647	/* Note: WP is not relevant in nested paging mode as we catch accesses on the (guest) physical level. */
648	/* Note: In nested paging mode the guest is allowed to run with paging disabled; the guest physical to host physical translation will remain active. */
649	if (!pVM->hwaccm.s.fNestedPaging)
650	{
651	val \|= X86_CR0_PG; /* Paging is always enabled; even when the guest is running in real mode or PE without paging. */
652	val \|= X86_CR0_WP; /* Must set this as we rely on protect various pages and supervisor writes must be caught. */
653	}
654	pVMCB->guest.u64CR0 = val;
655	}
656	/* CR2 as well */
657	pVMCB->guest.u64CR2 = pCtx->cr2;
658
659	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_CR3)
660	{
661	/* Save our shadow CR3 register. */
662	if (pVM->hwaccm.s.fNestedPaging)
663	{
664	pVMCB->ctrl.u64NestedPagingCR3 = PGMGetNestedCR3(pVM, PGMGetHostMode(pVM));
665	Assert(pVMCB->ctrl.u64NestedPagingCR3);
666	pVMCB->guest.u64CR3 = pCtx->cr3;
667	}
668	else
669	{
670	pVMCB->guest.u64CR3 = PGMGetHyperCR3(pVM);
671	Assert(pVMCB->guest.u64CR3);
672	}
673	}
674
675	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_CR4)
676	{
677	val = pCtx->cr4;
678	if (!pVM->hwaccm.s.fNestedPaging)
679	{
680	switch(pVCpu->hwaccm.s.enmShadowMode)
681	{
682	case PGMMODE_REAL:
683	case PGMMODE_PROTECTED: /* Protected mode, no paging. */
684	AssertFailed();
685	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
686
687	case PGMMODE_32_BIT: /* 32-bit paging. */
688	break;
689
690	case PGMMODE_PAE: /* PAE paging. */
691	case PGMMODE_PAE_NX: /* PAE paging with NX enabled. */
692	/** @todo use normal 32 bits paging */
693	val \|= X86_CR4_PAE;
694	break;
695
696	case PGMMODE_AMD64: /* 64-bit AMD paging (long mode). */
697	case PGMMODE_AMD64_NX: /* 64-bit AMD paging (long mode) with NX enabled. */
698	#ifdef VBOX_ENABLE_64_BITS_GUESTS
699	break;
700	#else
701	AssertFailed();
702	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
703	#endif
704
705	default: /* shut up gcc */
706	AssertFailed();
707	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
708	}
709	}
710	pVMCB->guest.u64CR4 = val;
711	}
712
713	/* Debug registers. */
714	if (pVCpu->hwaccm.s.fContextUseFlags & HWACCM_CHANGED_GUEST_DEBUG)
715	{
716	pCtx->dr[6] \|= X86_DR6_INIT_VAL; /* set all reserved bits to 1. */
717	pCtx->dr[6] &= ~RT_BIT(12); /* must be zero. */
718
719	pCtx->dr[7] &= 0xffffffff; /* upper 32 bits reserved */
720	pCtx->dr[7] &= ~(RT_BIT(11) \| RT_BIT(12) \| RT_BIT(14) \| RT_BIT(15)); /* must be zero */
721	pCtx->dr[7] \|= 0x400; /* must be one */
722
723	pVMCB->guest.u64DR7 = pCtx->dr[7];
724	pVMCB->guest.u64DR6 = pCtx->dr[6];
725
726	/* Sync the debug state now if any breakpoint is armed. */
727	if ( (pCtx->dr[7] & (X86_DR7_ENABLED_MASK\|X86_DR7_GD))
728	&& !CPUMIsGuestDebugStateActive(pVM)
729	&& !DBGFIsStepping(pVM))
730	{
731	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatDRxArmed);
732
733	/* Disable drx move intercepts. */
734	pVMCB->ctrl.u16InterceptRdDRx = 0;
735	pVMCB->ctrl.u16InterceptWrDRx = 0;
736
737	/* Save the host and load the guest debug state. */
738	int rc = CPUMR0LoadGuestDebugState(pVM, pVCpu, pCtx, false /* exclude DR6 */);
739	AssertRC(rc);
740	}
741	}
742
743	/* EIP, ESP and EFLAGS */
744	pVMCB->guest.u64RIP = pCtx->rip;
745	pVMCB->guest.u64RSP = pCtx->rsp;
746	pVMCB->guest.u64RFlags = pCtx->eflags.u32;
747
748	/* Set CPL */
749	pVMCB->guest.u8CPL = pCtx->csHid.Attr.n.u2Dpl;
750
751	/* RAX/EAX too, as VMRUN uses RAX as an implicit parameter. */
752	pVMCB->guest.u64RAX = pCtx->rax;
753
754	/* vmrun will fail without MSR_K6_EFER_SVME. */
755	pVMCB->guest.u64EFER = pCtx->msrEFER \| MSR_K6_EFER_SVME;
756
757	/* 64 bits guest mode? */
758	if (pCtx->msrEFER & MSR_K6_EFER_LMA)
759	{
760	#if !defined(VBOX_WITH_64_BITS_GUESTS)
761	return VERR_PGM_UNSUPPORTED_SHADOW_PAGING_MODE;
762	#elif HC_ARCH_BITS == 32
763	pVCpu->hwaccm.s.svm.pfnVMRun = SVMR0VMSwitcherRun64;
764	#else
765	pVCpu->hwaccm.s.svm.pfnVMRun = SVMR0VMRun64;
766	#endif
767	/* Unconditionally update these as wrmsr might have changed them. (HWACCM_CHANGED_GUEST_SEGMENT_REGS will not be set) */
768	pVMCB->guest.FS.u64Base = pCtx->fsHid.u64Base;
769	pVMCB->guest.GS.u64Base = pCtx->gsHid.u64Base;
770	}
771	else
772	{
773	/* Filter out the MSR_K6_LME bit or else AMD-V expects amd64 shadow paging. */
774	pVMCB->guest.u64EFER &= ~MSR_K6_EFER_LME;
775
776	pVCpu->hwaccm.s.svm.pfnVMRun = SVMR0VMRun;
777	}
778
779	/* TSC offset. */
780	if (TMCpuTickCanUseRealTSC(pVM, &pVMCB->ctrl.u64TSCOffset))
781	{
782	pVMCB->ctrl.u32InterceptCtrl1 &= ~SVM_CTRL1_INTERCEPT_RDTSC;
783	pVMCB->ctrl.u32InterceptCtrl2 &= ~SVM_CTRL2_INTERCEPT_RDTSCP;
784	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatTSCOffset);
785	}
786	else
787	{
788	pVMCB->ctrl.u32InterceptCtrl1 \|= SVM_CTRL1_INTERCEPT_RDTSC;
789	pVMCB->ctrl.u32InterceptCtrl2 \|= SVM_CTRL2_INTERCEPT_RDTSCP;
790	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatTSCIntercept);
791	}
792
793	/* Sync the various msrs for 64 bits mode. */
794	pVMCB->guest.u64STAR = pCtx->msrSTAR; /* legacy syscall eip, cs & ss */
795	pVMCB->guest.u64LSTAR = pCtx->msrLSTAR; /* 64 bits mode syscall rip */
796	pVMCB->guest.u64CSTAR = pCtx->msrCSTAR; /* compatibility mode syscall rip */
797	pVMCB->guest.u64SFMASK = pCtx->msrSFMASK; /* syscall flag mask */
798	pVMCB->guest.u64KernelGSBase = pCtx->msrKERNELGSBASE; /* swapgs exchange value */
799
800	#ifdef DEBUG
801	/* Intercept X86_XCPT_DB if stepping is enabled */
802	if (DBGFIsStepping(pVM))
803	pVMCB->ctrl.u32InterceptException \|= RT_BIT(X86_XCPT_DB);
804	else
805	pVMCB->ctrl.u32InterceptException &= ~RT_BIT(X86_XCPT_DB);
806	#endif
807
808	/* Done. */
809	pVCpu->hwaccm.s.fContextUseFlags &= ~HWACCM_CHANGED_ALL_GUEST;
810
811	return VINF_SUCCESS;
812	}
813
814
815	/**
816	* Runs guest code in an AMD-V VM.
817	*
818	* @returns VBox status code.
819	* @param pVM The VM to operate on.
820	* @param pVCpu The VM CPU to operate on.
821	* @param pCtx Guest context
822	*/
823	VMMR0DECL(int) SVMR0RunGuestCode(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
824	{
825	int rc = VINF_SUCCESS;
826	uint64_t exitCode = (uint64_t)SVM_EXIT_INVALID;
827	SVM_VMCB *pVMCB;
828	bool fSyncTPR = false;
829	unsigned cResume = 0;
830	uint8_t u8LastVTPR;
831	PHWACCM_CPUINFO pCpu = 0;
832	#ifdef VBOX_STRICT
833	RTCPUID idCpuCheck;
834	#endif
835
836	STAM_PROFILE_ADV_START(&pVCpu->hwaccm.s.StatEntry, x);
837
838	pVMCB = (SVM_VMCB *)pVCpu->hwaccm.s.svm.pVMCB;
839	AssertMsgReturn(pVMCB, ("Invalid pVMCB\n"), VERR_EM_INTERNAL_ERROR);
840
841	/* We can jump to this point to resume execution after determining that a VM-exit is innocent.
842	*/
843	ResumeExecution:
844	Assert(!HWACCMR0SuspendPending());
845
846	/* Safety precaution; looping for too long here can have a very bad effect on the host */
847	if (++cResume > HWACCM_MAX_RESUME_LOOPS)
848	{
849	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitMaxResume);
850	rc = VINF_EM_RAW_INTERRUPT;
851	goto end;
852	}
853
854	/* Check for irq inhibition due to instruction fusing (sti, mov ss). */
855	if (VM_FF_ISSET(pVM, VM_FF_INHIBIT_INTERRUPTS))
856	{
857	Log(("VM_FF_INHIBIT_INTERRUPTS at %RGv successor %RGv\n", (RTGCPTR)pCtx->rip, EMGetInhibitInterruptsPC(pVM)));
858	if (pCtx->rip != EMGetInhibitInterruptsPC(pVM))
859	{
860	/* Note: we intentionally don't clear VM_FF_INHIBIT_INTERRUPTS here.
861	* Before we are able to execute this instruction in raw mode (iret to guest code) an external interrupt might
862	* force a world switch again. Possibly allowing a guest interrupt to be dispatched in the process. This could
863	* break the guest. Sounds very unlikely, but such timing sensitive problems are not as rare as you might think.
864	*/
865	VM_FF_CLEAR(pVM, VM_FF_INHIBIT_INTERRUPTS);
866	/* Irq inhibition is no longer active; clear the corresponding SVM state. */
867	pVMCB->ctrl.u64IntShadow = 0;
868	}
869	}
870	else
871	{
872	/* Irq inhibition is no longer active; clear the corresponding SVM state. */
873	pVMCB->ctrl.u64IntShadow = 0;
874	}
875
876	/* Check for pending actions that force us to go back to ring 3. */
877	#ifdef DEBUG
878	/* Intercept X86_XCPT_DB if stepping is enabled */
879	if (!DBGFIsStepping(pVM))
880	#endif
881	{
882	if (VM_FF_ISPENDING(pVM, VM_FF_TO_R3 \| VM_FF_TIMER))
883	{
884	VM_FF_CLEAR(pVM, VM_FF_TO_R3);
885	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatSwitchToR3);
886	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatEntry, x);
887	rc = VINF_EM_RAW_TO_R3;
888	goto end;
889	}
890	}
891
892	/* Pending request packets might contain actions that need immediate attention, such as pending hardware interrupts. */
893	if (VM_FF_ISPENDING(pVM, VM_FF_REQUEST))
894	{
895	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatEntry, x);
896	rc = VINF_EM_PENDING_REQUEST;
897	goto end;
898	}
899
900	/* When external interrupts are pending, we should exit the VM when IF is set. */
901	/* Note! After VM_FF_INHIBIT_INTERRUPTS check!!! */
902	rc = SVMR0CheckPendingInterrupt(pVM, pVCpu, pVMCB, pCtx);
903	if (RT_FAILURE(rc))
904	{
905	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatEntry, x);
906	goto end;
907	}
908
909	/* TPR caching using CR8 is only available in 64 bits mode */
910	/* Note the 32 bits exception for AMD (X86_CPUID_AMD_FEATURE_ECX_CR8L), but that appears missing in Intel CPUs */
911	/* Note: we can't do this in LoadGuestState as PDMApicGetTPR can jump back to ring 3 (lock)!!!!!!!! */
912	if (pCtx->msrEFER & MSR_K6_EFER_LMA)
913	{
914	bool fPending;
915
916	/* TPR caching in CR8 */
917	int rc = PDMApicGetTPR(pVM, &u8LastVTPR, &fPending);
918	AssertRC(rc);
919	pVMCB->ctrl.IntCtrl.n.u8VTPR = u8LastVTPR;
920
921	if (fPending)
922	{
923	/* A TPR change could activate a pending interrupt, so catch cr8 writes. */
924	pVMCB->ctrl.u16InterceptWrCRx \|= RT_BIT(8);
925	}
926	else
927	/* No interrupts are pending, so we don't need to be explicitely notified.
928	* There are enough world switches for detecting pending interrupts.
929	*/
930	pVMCB->ctrl.u16InterceptWrCRx &= ~RT_BIT(8);
931
932	fSyncTPR = !fPending;
933	}
934
935	/* All done! Let's start VM execution. */
936	STAM_PROFILE_ADV_START(&pVCpu->hwaccm.s.StatInGC, x);
937
938	/* Enable nested paging if necessary (disabled each time after #VMEXIT). */
939	pVMCB->ctrl.NestedPaging.n.u1NestedPaging = pVM->hwaccm.s.fNestedPaging;
940
941	#ifdef LOG_ENABLED
942	pCpu = HWACCMR0GetCurrentCpu();
943	if ( pVCpu->hwaccm.s.idLastCpu != pCpu->idCpu
944	\|\| pVCpu->hwaccm.s.cTLBFlushes != pCpu->cTLBFlushes)
945	{
946	if (pVCpu->hwaccm.s.idLastCpu != pCpu->idCpu)
947	Log(("Force TLB flush due to rescheduling to a different cpu (%d vs %d)\n", pVCpu->hwaccm.s.idLastCpu, pCpu->idCpu));
948	else
949	Log(("Force TLB flush due to changed TLB flush count (%x vs %x)\n", pVCpu->hwaccm.s.cTLBFlushes, pCpu->cTLBFlushes));
950	}
951	if (pCpu->fFlushTLB)
952	Log(("Force TLB flush: first time cpu %d is used -> flush\n", pCpu->idCpu));
953	#endif
954
955	/*
956	* NOTE: DO NOT DO ANYTHING AFTER THIS POINT THAT MIGHT JUMP BACK TO RING 3!
957	* (until the actual world switch)
958	*/
959
960	#ifdef VBOX_STRICT
961	idCpuCheck = RTMpCpuId();
962	#endif
963
964	/* Load the guest state; must be here as it sets up the shadow cr0 for lazy fpu syncing! */
965	rc = SVMR0LoadGuestState(pVM, pVCpu, pCtx);
966	if (rc != VINF_SUCCESS)
967	{
968	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatEntry, x);
969	goto end;
970	}
971
972	pCpu = HWACCMR0GetCurrentCpu();
973	/* Force a TLB flush for the first world switch if the current cpu differs from the one we ran on last. */
974	/* Note that this can happen both for start and resume due to long jumps back to ring 3. */
975	if ( pVCpu->hwaccm.s.idLastCpu != pCpu->idCpu
976	/* if the tlb flush count has changed, another VM has flushed the TLB of this cpu, so we can't use our current ASID anymore. */
977	\|\| pVCpu->hwaccm.s.cTLBFlushes != pCpu->cTLBFlushes)
978	{
979	/* Force a TLB flush on VM entry. */
980	pVCpu->hwaccm.s.fForceTLBFlush = true;
981	}
982	else
983	Assert(!pCpu->fFlushTLB \|\| pVM->hwaccm.s.svm.fAlwaysFlushTLB);
984
985	pVCpu->hwaccm.s.idLastCpu = pCpu->idCpu;
986
987	/* Make sure we flush the TLB when required. Switch ASID to achieve the same thing, but without actually flushing the whole TLB (which is expensive). */
988	if ( pVCpu->hwaccm.s.fForceTLBFlush
989	&& !pVM->hwaccm.s.svm.fAlwaysFlushTLB)
990	{
991	if ( ++pCpu->uCurrentASID >= pVM->hwaccm.s.uMaxASID
992	\|\| pCpu->fFlushTLB)
993	{
994	pCpu->fFlushTLB = false;
995	pCpu->uCurrentASID = 1; /* start at 1; host uses 0 */
996	pVMCB->ctrl.TLBCtrl.n.u1TLBFlush = 1; /* wrap around; flush TLB */
997	pCpu->cTLBFlushes++;
998	}
999	else
1000	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatFlushASID);
1001
1002	pVCpu->hwaccm.s.cTLBFlushes = pCpu->cTLBFlushes;
1003	pVCpu->hwaccm.s.uCurrentASID = pCpu->uCurrentASID;
1004	}
1005	else
1006	{
1007	Assert(!pCpu->fFlushTLB \|\| pVM->hwaccm.s.svm.fAlwaysFlushTLB);
1008
1009	/* We never increase uCurrentASID in the fAlwaysFlushTLB (erratum 170) case. */
1010	if (!pCpu->uCurrentASID \|\| !pVCpu->hwaccm.s.uCurrentASID)
1011	pVCpu->hwaccm.s.uCurrentASID = pCpu->uCurrentASID = 1;
1012
1013	Assert(!pVM->hwaccm.s.svm.fAlwaysFlushTLB \|\| pVCpu->hwaccm.s.fForceTLBFlush);
1014	pVMCB->ctrl.TLBCtrl.n.u1TLBFlush = pVCpu->hwaccm.s.fForceTLBFlush;
1015	}
1016	AssertMsg(pVCpu->hwaccm.s.cTLBFlushes == pCpu->cTLBFlushes, ("Flush count mismatch for cpu %d (%x vs %x)\n", pCpu->idCpu, pVCpu->hwaccm.s.cTLBFlushes, pCpu->cTLBFlushes));
1017	AssertMsg(pCpu->uCurrentASID >= 1 && pCpu->uCurrentASID < pVM->hwaccm.s.uMaxASID, ("cpu%d uCurrentASID = %x\n", pCpu->idCpu, pCpu->uCurrentASID));
1018	AssertMsg(pVCpu->hwaccm.s.uCurrentASID >= 1 && pVCpu->hwaccm.s.uCurrentASID < pVM->hwaccm.s.uMaxASID, ("cpu%d VM uCurrentASID = %x\n", pCpu->idCpu, pVCpu->hwaccm.s.uCurrentASID));
1019	pVMCB->ctrl.TLBCtrl.n.u32ASID = pVCpu->hwaccm.s.uCurrentASID;
1020
1021	#ifdef VBOX_WITH_STATISTICS
1022	if (pVMCB->ctrl.TLBCtrl.n.u1TLBFlush)
1023	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatFlushTLBWorldSwitch);
1024	else
1025	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatNoFlushTLBWorldSwitch);
1026	#endif
1027
1028	/* In case we execute a goto ResumeExecution later on. */
1029	pVCpu->hwaccm.s.fResumeVM = true;
1030	pVCpu->hwaccm.s.fForceTLBFlush = pVM->hwaccm.s.svm.fAlwaysFlushTLB;
1031
1032	Assert(sizeof(pVCpu->hwaccm.s.svm.pVMCBPhys) == 8);
1033	Assert(pVMCB->ctrl.IntCtrl.n.u1VIrqMasking);
1034	Assert(pVMCB->ctrl.u64IOPMPhysAddr == pVM->hwaccm.s.svm.pIOBitmapPhys);
1035	Assert(pVMCB->ctrl.u64MSRPMPhysAddr == pVM->hwaccm.s.svm.pMSRBitmapPhys);
1036	Assert(pVMCB->ctrl.u64LBRVirt == 0);
1037
1038	#ifdef VBOX_STRICT
1039	Assert(idCpuCheck == RTMpCpuId());
1040	#endif
1041	TMNotifyStartOfExecution(pVM);
1042	pVCpu->hwaccm.s.svm.pfnVMRun(pVM->hwaccm.s.svm.pVMCBHostPhys, pVCpu->hwaccm.s.svm.pVMCBPhys, pCtx, pVM, pVCpu);
1043	TMNotifyEndOfExecution(pVM);
1044	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatInGC, x);
1045
1046	/*
1047	* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
1048	* IMPORTANT: WE CAN'T DO ANY LOGGING OR OPERATIONS THAT CAN DO A LONGJMP BACK TO RING 3 BEFORE WE'VE SYNCED BACK (MOST OF) THE GUEST STATE
1049	* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
1050	*/
1051
1052	STAM_PROFILE_ADV_START(&pVCpu->hwaccm.s.StatExit, x);
1053
1054	/* Reason for the VM exit */
1055	exitCode = pVMCB->ctrl.u64ExitCode;
1056
1057	if (exitCode == (uint64_t)SVM_EXIT_INVALID) /* Invalid guest state. */
1058	{
1059	HWACCMDumpRegs(pVM, pCtx);
1060	#ifdef DEBUG
1061	Log(("ctrl.u16InterceptRdCRx %x\n", pVMCB->ctrl.u16InterceptRdCRx));
1062	Log(("ctrl.u16InterceptWrCRx %x\n", pVMCB->ctrl.u16InterceptWrCRx));
1063	Log(("ctrl.u16InterceptRdDRx %x\n", pVMCB->ctrl.u16InterceptRdDRx));
1064	Log(("ctrl.u16InterceptWrDRx %x\n", pVMCB->ctrl.u16InterceptWrDRx));
1065	Log(("ctrl.u32InterceptException %x\n", pVMCB->ctrl.u32InterceptException));
1066	Log(("ctrl.u32InterceptCtrl1 %x\n", pVMCB->ctrl.u32InterceptCtrl1));
1067	Log(("ctrl.u32InterceptCtrl2 %x\n", pVMCB->ctrl.u32InterceptCtrl2));
1068	Log(("ctrl.u64IOPMPhysAddr %RX64\n", pVMCB->ctrl.u64IOPMPhysAddr));
1069	Log(("ctrl.u64MSRPMPhysAddr %RX64\n", pVMCB->ctrl.u64MSRPMPhysAddr));
1070	Log(("ctrl.u64TSCOffset %RX64\n", pVMCB->ctrl.u64TSCOffset));
1071
1072	Log(("ctrl.TLBCtrl.u32ASID %x\n", pVMCB->ctrl.TLBCtrl.n.u32ASID));
1073	Log(("ctrl.TLBCtrl.u1TLBFlush %x\n", pVMCB->ctrl.TLBCtrl.n.u1TLBFlush));
1074	Log(("ctrl.TLBCtrl.u7Reserved %x\n", pVMCB->ctrl.TLBCtrl.n.u7Reserved));
1075	Log(("ctrl.TLBCtrl.u24Reserved %x\n", pVMCB->ctrl.TLBCtrl.n.u24Reserved));
1076
1077	Log(("ctrl.IntCtrl.u8VTPR %x\n", pVMCB->ctrl.IntCtrl.n.u8VTPR));
1078	Log(("ctrl.IntCtrl.u1VIrqValid %x\n", pVMCB->ctrl.IntCtrl.n.u1VIrqValid));
1079	Log(("ctrl.IntCtrl.u7Reserved %x\n", pVMCB->ctrl.IntCtrl.n.u7Reserved));
1080	Log(("ctrl.IntCtrl.u4VIrqPriority %x\n", pVMCB->ctrl.IntCtrl.n.u4VIrqPriority));
1081	Log(("ctrl.IntCtrl.u1IgnoreTPR %x\n", pVMCB->ctrl.IntCtrl.n.u1IgnoreTPR));
1082	Log(("ctrl.IntCtrl.u3Reserved %x\n", pVMCB->ctrl.IntCtrl.n.u3Reserved));
1083	Log(("ctrl.IntCtrl.u1VIrqMasking %x\n", pVMCB->ctrl.IntCtrl.n.u1VIrqMasking));
1084	Log(("ctrl.IntCtrl.u7Reserved2 %x\n", pVMCB->ctrl.IntCtrl.n.u7Reserved2));
1085	Log(("ctrl.IntCtrl.u8VIrqVector %x\n", pVMCB->ctrl.IntCtrl.n.u8VIrqVector));
1086	Log(("ctrl.IntCtrl.u24Reserved %x\n", pVMCB->ctrl.IntCtrl.n.u24Reserved));
1087
1088	Log(("ctrl.u64IntShadow %RX64\n", pVMCB->ctrl.u64IntShadow));
1089	Log(("ctrl.u64ExitCode %RX64\n", pVMCB->ctrl.u64ExitCode));
1090	Log(("ctrl.u64ExitInfo1 %RX64\n", pVMCB->ctrl.u64ExitInfo1));
1091	Log(("ctrl.u64ExitInfo2 %RX64\n", pVMCB->ctrl.u64ExitInfo2));
1092	Log(("ctrl.ExitIntInfo.u8Vector %x\n", pVMCB->ctrl.ExitIntInfo.n.u8Vector));
1093	Log(("ctrl.ExitIntInfo.u3Type %x\n", pVMCB->ctrl.ExitIntInfo.n.u3Type));
1094	Log(("ctrl.ExitIntInfo.u1ErrorCodeValid %x\n", pVMCB->ctrl.ExitIntInfo.n.u1ErrorCodeValid));
1095	Log(("ctrl.ExitIntInfo.u19Reserved %x\n", pVMCB->ctrl.ExitIntInfo.n.u19Reserved));
1096	Log(("ctrl.ExitIntInfo.u1Valid %x\n", pVMCB->ctrl.ExitIntInfo.n.u1Valid));
1097	Log(("ctrl.ExitIntInfo.u32ErrorCode %x\n", pVMCB->ctrl.ExitIntInfo.n.u32ErrorCode));
1098	Log(("ctrl.NestedPaging %RX64\n", pVMCB->ctrl.NestedPaging.au64));
1099	Log(("ctrl.EventInject.u8Vector %x\n", pVMCB->ctrl.EventInject.n.u8Vector));
1100	Log(("ctrl.EventInject.u3Type %x\n", pVMCB->ctrl.EventInject.n.u3Type));
1101	Log(("ctrl.EventInject.u1ErrorCodeValid %x\n", pVMCB->ctrl.EventInject.n.u1ErrorCodeValid));
1102	Log(("ctrl.EventInject.u19Reserved %x\n", pVMCB->ctrl.EventInject.n.u19Reserved));
1103	Log(("ctrl.EventInject.u1Valid %x\n", pVMCB->ctrl.EventInject.n.u1Valid));
1104	Log(("ctrl.EventInject.u32ErrorCode %x\n", pVMCB->ctrl.EventInject.n.u32ErrorCode));
1105
1106	Log(("ctrl.u64NestedPagingCR3 %RX64\n", pVMCB->ctrl.u64NestedPagingCR3));
1107	Log(("ctrl.u64LBRVirt %RX64\n", pVMCB->ctrl.u64LBRVirt));
1108
1109	Log(("guest.CS.u16Sel %04X\n", pVMCB->guest.CS.u16Sel));
1110	Log(("guest.CS.u16Attr %04X\n", pVMCB->guest.CS.u16Attr));
1111	Log(("guest.CS.u32Limit %X\n", pVMCB->guest.CS.u32Limit));
1112	Log(("guest.CS.u64Base %RX64\n", pVMCB->guest.CS.u64Base));
1113	Log(("guest.DS.u16Sel %04X\n", pVMCB->guest.DS.u16Sel));
1114	Log(("guest.DS.u16Attr %04X\n", pVMCB->guest.DS.u16Attr));
1115	Log(("guest.DS.u32Limit %X\n", pVMCB->guest.DS.u32Limit));
1116	Log(("guest.DS.u64Base %RX64\n", pVMCB->guest.DS.u64Base));
1117	Log(("guest.ES.u16Sel %04X\n", pVMCB->guest.ES.u16Sel));
1118	Log(("guest.ES.u16Attr %04X\n", pVMCB->guest.ES.u16Attr));
1119	Log(("guest.ES.u32Limit %X\n", pVMCB->guest.ES.u32Limit));
1120	Log(("guest.ES.u64Base %RX64\n", pVMCB->guest.ES.u64Base));
1121	Log(("guest.FS.u16Sel %04X\n", pVMCB->guest.FS.u16Sel));
1122	Log(("guest.FS.u16Attr %04X\n", pVMCB->guest.FS.u16Attr));
1123	Log(("guest.FS.u32Limit %X\n", pVMCB->guest.FS.u32Limit));
1124	Log(("guest.FS.u64Base %RX64\n", pVMCB->guest.FS.u64Base));
1125	Log(("guest.GS.u16Sel %04X\n", pVMCB->guest.GS.u16Sel));
1126	Log(("guest.GS.u16Attr %04X\n", pVMCB->guest.GS.u16Attr));
1127	Log(("guest.GS.u32Limit %X\n", pVMCB->guest.GS.u32Limit));
1128	Log(("guest.GS.u64Base %RX64\n", pVMCB->guest.GS.u64Base));
1129
1130	Log(("guest.GDTR.u32Limit %X\n", pVMCB->guest.GDTR.u32Limit));
1131	Log(("guest.GDTR.u64Base %RX64\n", pVMCB->guest.GDTR.u64Base));
1132
1133	Log(("guest.LDTR.u16Sel %04X\n", pVMCB->guest.LDTR.u16Sel));
1134	Log(("guest.LDTR.u16Attr %04X\n", pVMCB->guest.LDTR.u16Attr));
1135	Log(("guest.LDTR.u32Limit %X\n", pVMCB->guest.LDTR.u32Limit));
1136	Log(("guest.LDTR.u64Base %RX64\n", pVMCB->guest.LDTR.u64Base));
1137
1138	Log(("guest.IDTR.u32Limit %X\n", pVMCB->guest.IDTR.u32Limit));
1139	Log(("guest.IDTR.u64Base %RX64\n", pVMCB->guest.IDTR.u64Base));
1140
1141	Log(("guest.TR.u16Sel %04X\n", pVMCB->guest.TR.u16Sel));
1142	Log(("guest.TR.u16Attr %04X\n", pVMCB->guest.TR.u16Attr));
1143	Log(("guest.TR.u32Limit %X\n", pVMCB->guest.TR.u32Limit));
1144	Log(("guest.TR.u64Base %RX64\n", pVMCB->guest.TR.u64Base));
1145
1146	Log(("guest.u8CPL %X\n", pVMCB->guest.u8CPL));
1147	Log(("guest.u64CR0 %RX64\n", pVMCB->guest.u64CR0));
1148	Log(("guest.u64CR2 %RX64\n", pVMCB->guest.u64CR2));
1149	Log(("guest.u64CR3 %RX64\n", pVMCB->guest.u64CR3));
1150	Log(("guest.u64CR4 %RX64\n", pVMCB->guest.u64CR4));
1151	Log(("guest.u64DR6 %RX64\n", pVMCB->guest.u64DR6));
1152	Log(("guest.u64DR7 %RX64\n", pVMCB->guest.u64DR7));
1153
1154	Log(("guest.u64RIP %RX64\n", pVMCB->guest.u64RIP));
1155	Log(("guest.u64RSP %RX64\n", pVMCB->guest.u64RSP));
1156	Log(("guest.u64RAX %RX64\n", pVMCB->guest.u64RAX));
1157	Log(("guest.u64RFlags %RX64\n", pVMCB->guest.u64RFlags));
1158
1159	Log(("guest.u64SysEnterCS %RX64\n", pVMCB->guest.u64SysEnterCS));
1160	Log(("guest.u64SysEnterEIP %RX64\n", pVMCB->guest.u64SysEnterEIP));
1161	Log(("guest.u64SysEnterESP %RX64\n", pVMCB->guest.u64SysEnterESP));
1162
1163	Log(("guest.u64EFER %RX64\n", pVMCB->guest.u64EFER));
1164	Log(("guest.u64STAR %RX64\n", pVMCB->guest.u64STAR));
1165	Log(("guest.u64LSTAR %RX64\n", pVMCB->guest.u64LSTAR));
1166	Log(("guest.u64CSTAR %RX64\n", pVMCB->guest.u64CSTAR));
1167	Log(("guest.u64SFMASK %RX64\n", pVMCB->guest.u64SFMASK));
1168	Log(("guest.u64KernelGSBase %RX64\n", pVMCB->guest.u64KernelGSBase));
1169	Log(("guest.u64GPAT %RX64\n", pVMCB->guest.u64GPAT));
1170	Log(("guest.u64DBGCTL %RX64\n", pVMCB->guest.u64DBGCTL));
1171	Log(("guest.u64BR_FROM %RX64\n", pVMCB->guest.u64BR_FROM));
1172	Log(("guest.u64BR_TO %RX64\n", pVMCB->guest.u64BR_TO));
1173	Log(("guest.u64LASTEXCPFROM %RX64\n", pVMCB->guest.u64LASTEXCPFROM));
1174	Log(("guest.u64LASTEXCPTO %RX64\n", pVMCB->guest.u64LASTEXCPTO));
1175
1176	#endif
1177	rc = VERR_SVM_UNABLE_TO_START_VM;
1178	goto end;
1179	}
1180
1181	/* Let's first sync back eip, esp, and eflags. */
1182	pCtx->rip = pVMCB->guest.u64RIP;
1183	pCtx->rsp = pVMCB->guest.u64RSP;
1184	pCtx->eflags.u32 = pVMCB->guest.u64RFlags;
1185	/* eax is saved/restore across the vmrun instruction */
1186	pCtx->rax = pVMCB->guest.u64RAX;
1187
1188	pCtx->msrKERNELGSBASE = pVMCB->guest.u64KernelGSBase; /* swapgs exchange value */
1189
1190	/* Can be updated behind our back in the nested paging case. */
1191	pCtx->cr2 = pVMCB->guest.u64CR2;
1192
1193	/* Guest CPU context: ES, CS, SS, DS, FS, GS. */
1194	SVM_READ_SELREG(SS, ss);
1195	SVM_READ_SELREG(CS, cs);
1196	SVM_READ_SELREG(DS, ds);
1197	SVM_READ_SELREG(ES, es);
1198	SVM_READ_SELREG(FS, fs);
1199	SVM_READ_SELREG(GS, gs);
1200
1201	/*
1202	* System MSRs
1203	*/
1204	pCtx->SysEnter.cs = pVMCB->guest.u64SysEnterCS;
1205	pCtx->SysEnter.eip = pVMCB->guest.u64SysEnterEIP;
1206	pCtx->SysEnter.esp = pVMCB->guest.u64SysEnterESP;
1207
1208	/* Remaining guest CPU context: TR, IDTR, GDTR, LDTR; must sync everything otherwise we can get out of sync when jumping to ring 3. */
1209	SVM_READ_SELREG(LDTR, ldtr);
1210	SVM_READ_SELREG(TR, tr);
1211
1212	pCtx->gdtr.cbGdt = pVMCB->guest.GDTR.u32Limit;
1213	pCtx->gdtr.pGdt = pVMCB->guest.GDTR.u64Base;
1214
1215	pCtx->idtr.cbIdt = pVMCB->guest.IDTR.u32Limit;
1216	pCtx->idtr.pIdt = pVMCB->guest.IDTR.u64Base;
1217
1218	/* Note: no reason to sync back the CRx and DRx registers. They can't be changed by the guest. */
1219	/* Note: only in the nested paging case can CR3 & CR4 be changed by the guest. */
1220	if ( pVM->hwaccm.s.fNestedPaging
1221	&& pCtx->cr3 != pVMCB->guest.u64CR3)
1222	{
1223	CPUMSetGuestCR3(pVM, pVMCB->guest.u64CR3);
1224	PGMUpdateCR3(pVM, pVMCB->guest.u64CR3);
1225	}
1226
1227	/* Note! NOW IT'S SAFE FOR LOGGING! */
1228
1229	/* Take care of instruction fusing (sti, mov ss) (see 15.20.5 Interrupt Shadows) */
1230	if (pVMCB->ctrl.u64IntShadow & SVM_INTERRUPT_SHADOW_ACTIVE)
1231	{
1232	Log(("uInterruptState %x rip=%RGv\n", pVMCB->ctrl.u64IntShadow, (RTGCPTR)pCtx->rip));
1233	EMSetInhibitInterruptsPC(pVM, pCtx->rip);
1234	}
1235	else
1236	VM_FF_CLEAR(pVM, VM_FF_INHIBIT_INTERRUPTS);
1237
1238	Log2(("exitCode = %x\n", exitCode));
1239
1240	/* Sync back DR6 as it could have been changed by hitting breakpoints. */
1241	pCtx->dr[6] = pVMCB->guest.u64DR6;
1242	/* DR7.GD can be cleared by debug exceptions, so sync it back as well. */
1243	pCtx->dr[7] = pVMCB->guest.u64DR7;
1244
1245	/* Check if an injected event was interrupted prematurely. */
1246	pVCpu->hwaccm.s.Event.intInfo = pVMCB->ctrl.ExitIntInfo.au64[0];
1247	if ( pVMCB->ctrl.ExitIntInfo.n.u1Valid
1248	&& pVMCB->ctrl.ExitIntInfo.n.u3Type != SVM_EVENT_SOFTWARE_INT /* we don't care about 'int xx' as the instruction will be restarted. */)
1249	{
1250	Log(("Pending inject %RX64 at %RGv exit=%08x\n", pVCpu->hwaccm.s.Event.intInfo, (RTGCPTR)pCtx->rip, exitCode));
1251
1252	#ifdef LOG_ENABLED
1253	SVM_EVENT Event;
1254	Event.au64[0] = pVCpu->hwaccm.s.Event.intInfo;
1255
1256	if ( exitCode == SVM_EXIT_EXCEPTION_E
1257	&& Event.n.u8Vector == 0xE)
1258	{
1259	Log(("Double fault!\n"));
1260	}
1261	#endif
1262
1263	pVCpu->hwaccm.s.Event.fPending = true;
1264	/* Error code present? (redundant) */
1265	if (pVMCB->ctrl.ExitIntInfo.n.u1ErrorCodeValid)
1266	{
1267	pVCpu->hwaccm.s.Event.errCode = pVMCB->ctrl.ExitIntInfo.n.u32ErrorCode;
1268	}
1269	else
1270	pVCpu->hwaccm.s.Event.errCode = 0;
1271	}
1272	#ifdef VBOX_WITH_STATISTICS
1273	if (exitCode == SVM_EXIT_NPF)
1274	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitReasonNPF);
1275	else
1276	STAM_COUNTER_INC(&pVCpu->hwaccm.s.paStatExitReasonR0[exitCode & MASK_EXITREASON_STAT]);
1277	#endif
1278
1279	if (fSyncTPR)
1280	{
1281	rc = PDMApicSetTPR(pVM, pVMCB->ctrl.IntCtrl.n.u8VTPR);
1282	AssertRC(rc);
1283	}
1284
1285	/* Deal with the reason of the VM-exit. */
1286	switch (exitCode)
1287	{
1288	case SVM_EXIT_EXCEPTION_0: case SVM_EXIT_EXCEPTION_1: case SVM_EXIT_EXCEPTION_2: case SVM_EXIT_EXCEPTION_3:
1289	case SVM_EXIT_EXCEPTION_4: case SVM_EXIT_EXCEPTION_5: case SVM_EXIT_EXCEPTION_6: case SVM_EXIT_EXCEPTION_7:
1290	case SVM_EXIT_EXCEPTION_8: case SVM_EXIT_EXCEPTION_9: case SVM_EXIT_EXCEPTION_A: case SVM_EXIT_EXCEPTION_B:
1291	case SVM_EXIT_EXCEPTION_C: case SVM_EXIT_EXCEPTION_D: case SVM_EXIT_EXCEPTION_E: case SVM_EXIT_EXCEPTION_F:
1292	case SVM_EXIT_EXCEPTION_10: case SVM_EXIT_EXCEPTION_11: case SVM_EXIT_EXCEPTION_12: case SVM_EXIT_EXCEPTION_13:
1293	case SVM_EXIT_EXCEPTION_14: case SVM_EXIT_EXCEPTION_15: case SVM_EXIT_EXCEPTION_16: case SVM_EXIT_EXCEPTION_17:
1294	case SVM_EXIT_EXCEPTION_18: case SVM_EXIT_EXCEPTION_19: case SVM_EXIT_EXCEPTION_1A: case SVM_EXIT_EXCEPTION_1B:
1295	case SVM_EXIT_EXCEPTION_1C: case SVM_EXIT_EXCEPTION_1D: case SVM_EXIT_EXCEPTION_1E: case SVM_EXIT_EXCEPTION_1F:
1296	{
1297	/* Pending trap. */
1298	SVM_EVENT Event;
1299	uint32_t vector = exitCode - SVM_EXIT_EXCEPTION_0;
1300
1301	Log2(("Hardware/software interrupt %d\n", vector));
1302	switch (vector)
1303	{
1304	case X86_XCPT_DB:
1305	{
1306	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestDB);
1307
1308	/* Note that we don't support guest and host-initiated debugging at the same time. */
1309	Assert(DBGFIsStepping(pVM));
1310
1311	rc = DBGFR0Trap01Handler(pVM, CPUMCTX2CORE(pCtx), pCtx->dr[6]);
1312	if (rc == VINF_EM_RAW_GUEST_TRAP)
1313	{
1314	Log(("Trap %x (debug) at %016RX64\n", vector, pCtx->rip));
1315
1316	/* Reinject the exception. */
1317	Event.au64[0] = 0;
1318	Event.n.u3Type = SVM_EVENT_EXCEPTION; /* trap or fault */
1319	Event.n.u1Valid = 1;
1320	Event.n.u8Vector = X86_XCPT_DB;
1321
1322	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1323
1324	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1325	goto ResumeExecution;
1326	}
1327	/* Return to ring 3 to deal with the debug exit code. */
1328	break;
1329	}
1330
1331	case X86_XCPT_NM:
1332	{
1333	Log(("#NM fault at %RGv\n", (RTGCPTR)pCtx->rip));
1334
1335	/** @todo don't intercept #NM exceptions anymore when we've activated the guest FPU state. */
1336	/* If we sync the FPU/XMM state on-demand, then we can continue execution as if nothing has happened. */
1337	rc = CPUMR0LoadGuestFPU(pVM, pVCpu, pCtx);
1338	if (rc == VINF_SUCCESS)
1339	{
1340	Assert(CPUMIsGuestFPUStateActive(pVCpu));
1341	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitShadowNM);
1342
1343	/* Continue execution. */
1344	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1345	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR0;
1346
1347	goto ResumeExecution;
1348	}
1349
1350	Log(("Forward #NM fault to the guest\n"));
1351	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestNM);
1352
1353	Event.au64[0] = 0;
1354	Event.n.u3Type = SVM_EVENT_EXCEPTION;
1355	Event.n.u1Valid = 1;
1356	Event.n.u8Vector = X86_XCPT_NM;
1357
1358	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1359	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1360	goto ResumeExecution;
1361	}
1362
1363	case X86_XCPT_PF: /* Page fault */
1364	{
1365	uint32_t errCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
1366	RTGCUINTPTR uFaultAddress = pVMCB->ctrl.u64ExitInfo2; /* EXITINFO2 = fault address */
1367
1368	#ifdef DEBUG
1369	if (pVM->hwaccm.s.fNestedPaging)
1370	{ /* A genuine pagefault.
1371	* Forward the trap to the guest by injecting the exception and resuming execution.
1372	*/
1373	Log(("Guest page fault at %RGv cr2=%RGv error code %x rsp=%RGv\n", (RTGCPTR)pCtx->rip, uFaultAddress, errCode, (RTGCPTR)pCtx->rsp));
1374	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestPF);
1375
1376	/* Now we must update CR2. */
1377	pCtx->cr2 = uFaultAddress;
1378
1379	Event.au64[0] = 0;
1380	Event.n.u3Type = SVM_EVENT_EXCEPTION;
1381	Event.n.u1Valid = 1;
1382	Event.n.u8Vector = X86_XCPT_PF;
1383	Event.n.u1ErrorCodeValid = 1;
1384	Event.n.u32ErrorCode = errCode;
1385
1386	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1387
1388	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1389	goto ResumeExecution;
1390	}
1391	#endif
1392	Assert(!pVM->hwaccm.s.fNestedPaging);
1393
1394	Log2(("Page fault at %RGv cr2=%RGv error code %x\n", (RTGCPTR)pCtx->rip, uFaultAddress, errCode));
1395	/* Exit qualification contains the linear address of the page fault. */
1396	TRPMAssertTrap(pVM, X86_XCPT_PF, TRPM_TRAP);
1397	TRPMSetErrorCode(pVM, errCode);
1398	TRPMSetFaultAddress(pVM, uFaultAddress);
1399
1400	/* Forward it to our trap handler first, in case our shadow pages are out of sync. */
1401	rc = PGMTrap0eHandler(pVM, errCode, CPUMCTX2CORE(pCtx), (RTGCPTR)uFaultAddress);
1402	Log2(("PGMTrap0eHandler %RGv returned %Rrc\n", (RTGCPTR)pCtx->rip, rc));
1403	if (rc == VINF_SUCCESS)
1404	{ /* We've successfully synced our shadow pages, so let's just continue execution. */
1405	Log2(("Shadow page fault at %RGv cr2=%RGv error code %x\n", (RTGCPTR)pCtx->rip, uFaultAddress, errCode));
1406	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitShadowPF);
1407
1408	TRPMResetTrap(pVM);
1409
1410	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1411	goto ResumeExecution;
1412	}
1413	else
1414	if (rc == VINF_EM_RAW_GUEST_TRAP)
1415	{ /* A genuine pagefault.
1416	* Forward the trap to the guest by injecting the exception and resuming execution.
1417	*/
1418	Log2(("Forward page fault to the guest\n"));
1419	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestPF);
1420	/* The error code might have been changed. */
1421	errCode = TRPMGetErrorCode(pVM);
1422
1423	TRPMResetTrap(pVM);
1424
1425	/* Now we must update CR2. */
1426	pCtx->cr2 = uFaultAddress;
1427
1428	Event.au64[0] = 0;
1429	Event.n.u3Type = SVM_EVENT_EXCEPTION;
1430	Event.n.u1Valid = 1;
1431	Event.n.u8Vector = X86_XCPT_PF;
1432	Event.n.u1ErrorCodeValid = 1;
1433	Event.n.u32ErrorCode = errCode;
1434
1435	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1436
1437	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1438	goto ResumeExecution;
1439	}
1440	#ifdef VBOX_STRICT
1441	if (rc != VINF_EM_RAW_EMULATE_INSTR)
1442	LogFlow(("PGMTrap0eHandler failed with %d\n", rc));
1443	#endif
1444	/* Need to go back to the recompiler to emulate the instruction. */
1445	TRPMResetTrap(pVM);
1446	break;
1447	}
1448
1449	case X86_XCPT_MF: /* Floating point exception. */
1450	{
1451	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestMF);
1452	if (!(pCtx->cr0 & X86_CR0_NE))
1453	{
1454	/* old style FPU error reporting needs some extra work. */
1455	/** @todo don't fall back to the recompiler, but do it manually. */
1456	rc = VINF_EM_RAW_EMULATE_INSTR;
1457	break;
1458	}
1459	Log(("Trap %x at %RGv\n", vector, (RTGCPTR)pCtx->rip));
1460
1461	Event.au64[0] = 0;
1462	Event.n.u3Type = SVM_EVENT_EXCEPTION;
1463	Event.n.u1Valid = 1;
1464	Event.n.u8Vector = X86_XCPT_MF;
1465
1466	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1467
1468	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1469	goto ResumeExecution;
1470	}
1471
1472	#ifdef VBOX_STRICT
1473	case X86_XCPT_GP: /* General protection failure exception.*/
1474	case X86_XCPT_UD: /* Unknown opcode exception. */
1475	case X86_XCPT_DE: /* Divide error. */
1476	case X86_XCPT_SS: /* Stack segment exception. */
1477	case X86_XCPT_NP: /* Segment not present exception. */
1478	{
1479	Event.au64[0] = 0;
1480	Event.n.u3Type = SVM_EVENT_EXCEPTION;
1481	Event.n.u1Valid = 1;
1482	Event.n.u8Vector = vector;
1483
1484	switch(vector)
1485	{
1486	case X86_XCPT_GP:
1487	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestGP);
1488	Event.n.u1ErrorCodeValid = 1;
1489	Event.n.u32ErrorCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
1490	break;
1491	case X86_XCPT_DE:
1492	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestDE);
1493	break;
1494	case X86_XCPT_UD:
1495	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestUD);
1496	break;
1497	case X86_XCPT_SS:
1498	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestSS);
1499	Event.n.u1ErrorCodeValid = 1;
1500	Event.n.u32ErrorCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
1501	break;
1502	case X86_XCPT_NP:
1503	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitGuestNP);
1504	Event.n.u1ErrorCodeValid = 1;
1505	Event.n.u32ErrorCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
1506	break;
1507	}
1508	Log(("Trap %x at %RGv esi=%x\n", vector, (RTGCPTR)pCtx->rip, pCtx->esi));
1509	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1510
1511	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1512	goto ResumeExecution;
1513	}
1514	#endif
1515	default:
1516	AssertMsgFailed(("Unexpected vm-exit caused by exception %x\n", vector));
1517	rc = VERR_EM_INTERNAL_ERROR;
1518	break;
1519
1520	} /* switch (vector) */
1521	break;
1522	}
1523
1524	case SVM_EXIT_NPF:
1525	{
1526	/* EXITINFO1 contains fault errorcode; EXITINFO2 contains the guest physical address causing the fault. */
1527	uint32_t errCode = pVMCB->ctrl.u64ExitInfo1; /* EXITINFO1 = error code */
1528	RTGCPHYS uFaultAddress = pVMCB->ctrl.u64ExitInfo2; /* EXITINFO2 = fault address */
1529
1530	Assert(pVM->hwaccm.s.fNestedPaging);
1531	Log(("Nested page fault at %RGv cr2=%RGp error code %x\n", (RTGCPTR)pCtx->rip, uFaultAddress, errCode));
1532	/* Exit qualification contains the linear address of the page fault. */
1533	TRPMAssertTrap(pVM, X86_XCPT_PF, TRPM_TRAP);
1534	TRPMSetErrorCode(pVM, errCode);
1535	TRPMSetFaultAddress(pVM, uFaultAddress);
1536
1537	/* Handle the pagefault trap for the nested shadow table. */
1538	rc = PGMR0Trap0eHandlerNestedPaging(pVM, PGMGetHostMode(pVM), errCode, CPUMCTX2CORE(pCtx), uFaultAddress);
1539	Log2(("PGMR0Trap0eHandlerNestedPaging %RGv returned %Rrc\n", (RTGCPTR)pCtx->rip, rc));
1540	if (rc == VINF_SUCCESS)
1541	{ /* We've successfully synced our shadow pages, so let's just continue execution. */
1542	Log2(("Shadow page fault at %RGv cr2=%RGp error code %x\n", (RTGCPTR)pCtx->rip, uFaultAddress, errCode));
1543	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitShadowPF);
1544
1545	TRPMResetTrap(pVM);
1546
1547	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1548	goto ResumeExecution;
1549	}
1550
1551	#ifdef VBOX_STRICT
1552	if (rc != VINF_EM_RAW_EMULATE_INSTR)
1553	LogFlow(("PGMTrap0eHandlerNestedPaging failed with %d\n", rc));
1554	#endif
1555	/* Need to go back to the recompiler to emulate the instruction. */
1556	TRPMResetTrap(pVM);
1557	break;
1558	}
1559
1560	case SVM_EXIT_VINTR:
1561	/* A virtual interrupt is about to be delivered, which means IF=1. */
1562	Log(("SVM_EXIT_VINTR IF=%d\n", pCtx->eflags.Bits.u1IF));
1563	pVMCB->ctrl.IntCtrl.n.u1VIrqValid = 0;
1564	pVMCB->ctrl.IntCtrl.n.u8VIrqVector = 0;
1565	goto ResumeExecution;
1566
1567	case SVM_EXIT_FERR_FREEZE:
1568	case SVM_EXIT_INTR:
1569	case SVM_EXIT_NMI:
1570	case SVM_EXIT_SMI:
1571	case SVM_EXIT_INIT:
1572	/* External interrupt; leave to allow it to be dispatched again. */
1573	rc = VINF_EM_RAW_INTERRUPT;
1574	break;
1575
1576	case SVM_EXIT_WBINVD:
1577	case SVM_EXIT_INVD: /* Guest software attempted to execute INVD. */
1578	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitInvd);
1579	/* Skip instruction and continue directly. */
1580	pCtx->rip += 2; /* Note! hardcoded opcode size! */
1581	/* Continue execution.*/
1582	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1583	goto ResumeExecution;
1584
1585	case SVM_EXIT_CPUID: /* Guest software attempted to execute CPUID. */
1586	{
1587	Log2(("SVM: Cpuid at %RGv for %x\n", (RTGCPTR)pCtx->rip, pCtx->eax));
1588	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitCpuid);
1589	rc = EMInterpretCpuId(pVM, CPUMCTX2CORE(pCtx));
1590	if (rc == VINF_SUCCESS)
1591	{
1592	/* Update EIP and continue execution. */
1593	pCtx->rip += 2; /* Note! hardcoded opcode size! */
1594	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1595	goto ResumeExecution;
1596	}
1597	AssertMsgFailed(("EMU: cpuid failed with %Rrc\n", rc));
1598	rc = VINF_EM_RAW_EMULATE_INSTR;
1599	break;
1600	}
1601
1602	case SVM_EXIT_RDTSC: /* Guest software attempted to execute RDTSC. */
1603	{
1604	Log2(("SVM: Rdtsc\n"));
1605	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitRdtsc);
1606	rc = EMInterpretRdtsc(pVM, CPUMCTX2CORE(pCtx));
1607	if (rc == VINF_SUCCESS)
1608	{
1609	/* Update EIP and continue execution. */
1610	pCtx->rip += 2; /* Note! hardcoded opcode size! */
1611	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1612	goto ResumeExecution;
1613	}
1614	AssertMsgFailed(("EMU: rdtsc failed with %Rrc\n", rc));
1615	rc = VINF_EM_RAW_EMULATE_INSTR;
1616	break;
1617	}
1618
1619	case SVM_EXIT_RDTSCP: /* Guest software attempted to execute RDTSCP. */
1620	{
1621	Log2(("SVM: Rdtscp\n"));
1622	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitRdtsc);
1623	rc = EMInterpretRdtscp(pVM, pCtx);
1624	if (rc == VINF_SUCCESS)
1625	{
1626	/* Update EIP and continue execution. */
1627	pCtx->rip += 3; /* Note! hardcoded opcode size! */
1628	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1629	goto ResumeExecution;
1630	}
1631	AssertMsgFailed(("EMU: rdtscp failed with %Rrc\n", rc));
1632	rc = VINF_EM_RAW_EMULATE_INSTR;
1633	break;
1634	}
1635
1636	case SVM_EXIT_INVLPG: /* Guest software attempted to execute INVPG. */
1637	{
1638	Log2(("SVM: invlpg\n"));
1639	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitInvpg);
1640
1641	Assert(!pVM->hwaccm.s.fNestedPaging);
1642
1643	/* Truly a pita. Why can't SVM give the same information as VT-x? */
1644	rc = SVMR0InterpretInvpg(pVM, CPUMCTX2CORE(pCtx), pVMCB->ctrl.TLBCtrl.n.u32ASID);
1645	if (rc == VINF_SUCCESS)
1646	{
1647	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatFlushPageInvlpg);
1648	goto ResumeExecution; /* eip already updated */
1649	}
1650	break;
1651	}
1652
1653	case SVM_EXIT_WRITE_CR0: case SVM_EXIT_WRITE_CR1: case SVM_EXIT_WRITE_CR2: case SVM_EXIT_WRITE_CR3:
1654	case SVM_EXIT_WRITE_CR4: case SVM_EXIT_WRITE_CR5: case SVM_EXIT_WRITE_CR6: case SVM_EXIT_WRITE_CR7:
1655	case SVM_EXIT_WRITE_CR8: case SVM_EXIT_WRITE_CR9: case SVM_EXIT_WRITE_CR10: case SVM_EXIT_WRITE_CR11:
1656	case SVM_EXIT_WRITE_CR12: case SVM_EXIT_WRITE_CR13: case SVM_EXIT_WRITE_CR14: case SVM_EXIT_WRITE_CR15:
1657	{
1658	uint32_t cbSize;
1659
1660	Log2(("SVM: %RGv mov cr%d, \n", (RTGCPTR)pCtx->rip, exitCode - SVM_EXIT_WRITE_CR0));
1661	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitCRxWrite);
1662	rc = EMInterpretInstruction(pVM, CPUMCTX2CORE(pCtx), 0, &cbSize);
1663
1664	switch (exitCode - SVM_EXIT_WRITE_CR0)
1665	{
1666	case 0:
1667	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR0;
1668	break;
1669	case 2:
1670	break;
1671	case 3:
1672	Assert(!pVM->hwaccm.s.fNestedPaging);
1673	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR3;
1674	break;
1675	case 4:
1676	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_CR4;
1677	break;
1678	case 8:
1679	break;
1680	default:
1681	AssertFailed();
1682	}
1683	/* Check if a sync operation is pending. */
1684	if ( rc == VINF_SUCCESS /* don't bother if we are going to ring 3 anyway */
1685	&& VM_FF_ISPENDING(pVM, VM_FF_PGM_SYNC_CR3 \| VM_FF_PGM_SYNC_CR3_NON_GLOBAL))
1686	{
1687	rc = PGMSyncCR3(pVM, CPUMGetGuestCR0(pVM), CPUMGetGuestCR3(pVM), CPUMGetGuestCR4(pVM), VM_FF_ISSET(pVM, VM_FF_PGM_SYNC_CR3));
1688	AssertRC(rc);
1689
1690	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatFlushTLBCRxChange);
1691
1692	/* Must be set by PGMSyncCR3 */
1693	Assert(PGMGetGuestMode(pVM) <= PGMMODE_PROTECTED \|\| pVCpu->hwaccm.s.fForceTLBFlush);
1694	}
1695	if (rc == VINF_SUCCESS)
1696	{
1697	/* EIP has been updated already. */
1698
1699	/* Only resume if successful. */
1700	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1701	goto ResumeExecution;
1702	}
1703	Assert(rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3);
1704	break;
1705	}
1706
1707	case SVM_EXIT_READ_CR0: case SVM_EXIT_READ_CR1: case SVM_EXIT_READ_CR2: case SVM_EXIT_READ_CR3:
1708	case SVM_EXIT_READ_CR4: case SVM_EXIT_READ_CR5: case SVM_EXIT_READ_CR6: case SVM_EXIT_READ_CR7:
1709	case SVM_EXIT_READ_CR8: case SVM_EXIT_READ_CR9: case SVM_EXIT_READ_CR10: case SVM_EXIT_READ_CR11:
1710	case SVM_EXIT_READ_CR12: case SVM_EXIT_READ_CR13: case SVM_EXIT_READ_CR14: case SVM_EXIT_READ_CR15:
1711	{
1712	uint32_t cbSize;
1713
1714	Log2(("SVM: %RGv mov x, cr%d\n", (RTGCPTR)pCtx->rip, exitCode - SVM_EXIT_READ_CR0));
1715	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitCRxRead);
1716	rc = EMInterpretInstruction(pVM, CPUMCTX2CORE(pCtx), 0, &cbSize);
1717	if (rc == VINF_SUCCESS)
1718	{
1719	/* EIP has been updated already. */
1720
1721	/* Only resume if successful. */
1722	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1723	goto ResumeExecution;
1724	}
1725	Assert(rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3);
1726	break;
1727	}
1728
1729	case SVM_EXIT_WRITE_DR0: case SVM_EXIT_WRITE_DR1: case SVM_EXIT_WRITE_DR2: case SVM_EXIT_WRITE_DR3:
1730	case SVM_EXIT_WRITE_DR4: case SVM_EXIT_WRITE_DR5: case SVM_EXIT_WRITE_DR6: case SVM_EXIT_WRITE_DR7:
1731	case SVM_EXIT_WRITE_DR8: case SVM_EXIT_WRITE_DR9: case SVM_EXIT_WRITE_DR10: case SVM_EXIT_WRITE_DR11:
1732	case SVM_EXIT_WRITE_DR12: case SVM_EXIT_WRITE_DR13: case SVM_EXIT_WRITE_DR14: case SVM_EXIT_WRITE_DR15:
1733	{
1734	uint32_t cbSize;
1735
1736	Log2(("SVM: %RGv mov dr%d, x\n", (RTGCPTR)pCtx->rip, exitCode - SVM_EXIT_WRITE_DR0));
1737	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitDRxRead);
1738
1739	if (!DBGFIsStepping(pVM))
1740	{
1741	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatDRxContextSwitch);
1742
1743	/* Disable drx move intercepts. */
1744	pVMCB->ctrl.u16InterceptRdDRx = 0;
1745	pVMCB->ctrl.u16InterceptWrDRx = 0;
1746
1747	/* Save the host and load the guest debug state. */
1748	rc = CPUMR0LoadGuestDebugState(pVM, pVCpu, pCtx, false /* exclude DR6 */);
1749	AssertRC(rc);
1750
1751	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1752	goto ResumeExecution;
1753	}
1754
1755	rc = EMInterpretInstruction(pVM, CPUMCTX2CORE(pCtx), 0, &cbSize);
1756	if (rc == VINF_SUCCESS)
1757	{
1758	/* EIP has been updated already. */
1759	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_DEBUG;
1760
1761	/* Only resume if successful. */
1762	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1763	goto ResumeExecution;
1764	}
1765	Assert(rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3);
1766	break;
1767	}
1768
1769	case SVM_EXIT_READ_DR0: case SVM_EXIT_READ_DR1: case SVM_EXIT_READ_DR2: case SVM_EXIT_READ_DR3:
1770	case SVM_EXIT_READ_DR4: case SVM_EXIT_READ_DR5: case SVM_EXIT_READ_DR6: case SVM_EXIT_READ_DR7:
1771	case SVM_EXIT_READ_DR8: case SVM_EXIT_READ_DR9: case SVM_EXIT_READ_DR10: case SVM_EXIT_READ_DR11:
1772	case SVM_EXIT_READ_DR12: case SVM_EXIT_READ_DR13: case SVM_EXIT_READ_DR14: case SVM_EXIT_READ_DR15:
1773	{
1774	uint32_t cbSize;
1775
1776	Log2(("SVM: %RGv mov dr%d, x\n", (RTGCPTR)pCtx->rip, exitCode - SVM_EXIT_READ_DR0));
1777	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitDRxRead);
1778
1779	if (!DBGFIsStepping(pVM))
1780	{
1781	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatDRxContextSwitch);
1782
1783	/* Disable drx move intercepts. */
1784	pVMCB->ctrl.u16InterceptRdDRx = 0;
1785	pVMCB->ctrl.u16InterceptWrDRx = 0;
1786
1787	/* Save the host and load the guest debug state. */
1788	rc = CPUMR0LoadGuestDebugState(pVM, pVCpu, pCtx, false /* exclude DR6 */);
1789	AssertRC(rc);
1790
1791	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1792	goto ResumeExecution;
1793	}
1794
1795	rc = EMInterpretInstruction(pVM, CPUMCTX2CORE(pCtx), 0, &cbSize);
1796	if (rc == VINF_SUCCESS)
1797	{
1798	/* EIP has been updated already. */
1799
1800	/* Only resume if successful. */
1801	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1802	goto ResumeExecution;
1803	}
1804	Assert(rc == VERR_EM_INTERPRETER \|\| rc == VINF_PGM_CHANGE_MODE \|\| rc == VINF_PGM_SYNC_CR3);
1805	break;
1806	}
1807
1808	/* Note: We'll get a #GP if the IO instruction isn't allowed (IOPL or TSS bitmap); no need to double check. */
1809	case SVM_EXIT_IOIO: /* I/O instruction. */
1810	{
1811	SVM_IOIO_EXIT IoExitInfo;
1812	uint32_t uIOSize, uAndVal;
1813
1814	IoExitInfo.au32[0] = pVMCB->ctrl.u64ExitInfo1;
1815
1816	/** @todo could use a lookup table here */
1817	if (IoExitInfo.n.u1OP8)
1818	{
1819	uIOSize = 1;
1820	uAndVal = 0xff;
1821	}
1822	else
1823	if (IoExitInfo.n.u1OP16)
1824	{
1825	uIOSize = 2;
1826	uAndVal = 0xffff;
1827	}
1828	else
1829	if (IoExitInfo.n.u1OP32)
1830	{
1831	uIOSize = 4;
1832	uAndVal = 0xffffffff;
1833	}
1834	else
1835	{
1836	AssertFailed(); /* should be fatal. */
1837	rc = VINF_EM_RAW_EMULATE_INSTR;
1838	break;
1839	}
1840
1841	if (IoExitInfo.n.u1STR)
1842	{
1843	/* ins/outs */
1844	DISCPUSTATE Cpu;
1845
1846	/* Disassemble manually to deal with segment prefixes. */
1847	rc = EMInterpretDisasOne(pVM, CPUMCTX2CORE(pCtx), &Cpu, NULL);
1848	if (rc == VINF_SUCCESS)
1849	{
1850	if (IoExitInfo.n.u1Type == 0)
1851	{
1852	Log2(("IOMInterpretOUTSEx %RGv %x size=%d\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, uIOSize));
1853	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitIOStringWrite);
1854	rc = IOMInterpretOUTSEx(pVM, CPUMCTX2CORE(pCtx), IoExitInfo.n.u16Port, Cpu.prefix, uIOSize);
1855	}
1856	else
1857	{
1858	Log2(("IOMInterpretINSEx %RGv %x size=%d\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, uIOSize));
1859	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitIOStringRead);
1860	rc = IOMInterpretINSEx(pVM, CPUMCTX2CORE(pCtx), IoExitInfo.n.u16Port, Cpu.prefix, uIOSize);
1861	}
1862	}
1863	else
1864	rc = VINF_EM_RAW_EMULATE_INSTR;
1865	}
1866	else
1867	{
1868	/* normal in/out */
1869	Assert(!IoExitInfo.n.u1REP);
1870
1871	if (IoExitInfo.n.u1Type == 0)
1872	{
1873	Log2(("IOMIOPortWrite %RGv %x %x size=%d\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, pCtx->eax & uAndVal, uIOSize));
1874	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitIOWrite);
1875	rc = IOMIOPortWrite(pVM, IoExitInfo.n.u16Port, pCtx->eax & uAndVal, uIOSize);
1876	}
1877	else
1878	{
1879	uint32_t u32Val = 0;
1880
1881	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatExitIORead);
1882	rc = IOMIOPortRead(pVM, IoExitInfo.n.u16Port, &u32Val, uIOSize);
1883	if (IOM_SUCCESS(rc))
1884	{
1885	/* Write back to the EAX register. */
1886	pCtx->eax = (pCtx->eax & ~uAndVal) \| (u32Val & uAndVal);
1887	Log2(("IOMIOPortRead %RGv %x %x size=%d\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, u32Val & uAndVal, uIOSize));
1888	}
1889	}
1890	}
1891	/*
1892	* Handled the I/O return codes.
1893	* (The unhandled cases end up with rc == VINF_EM_RAW_EMULATE_INSTR.)
1894	*/
1895	if (IOM_SUCCESS(rc))
1896	{
1897	/* Update EIP and continue execution. */
1898	pCtx->rip = pVMCB->ctrl.u64ExitInfo2; /* RIP/EIP of the next instruction is saved in EXITINFO2. */
1899	if (RT_LIKELY(rc == VINF_SUCCESS))
1900	{
1901	/* If any IO breakpoints are armed, then we should check if a debug trap needs to be generated. */
1902	if (pCtx->dr[7] & X86_DR7_ENABLED_MASK)
1903	{
1904	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatDRxIOCheck);
1905	for (unsigned i=0;i<4;i++)
1906	{
1907	unsigned uBPLen = g_aIOSize[X86_DR7_GET_LEN(pCtx->dr[7], i)];
1908
1909	if ( (IoExitInfo.n.u16Port >= pCtx->dr[i] && IoExitInfo.n.u16Port < pCtx->dr[i] + uBPLen)
1910	&& (pCtx->dr[7] & (X86_DR7_L(i) \| X86_DR7_G(i)))
1911	&& (pCtx->dr[7] & X86_DR7_RW(i, X86_DR7_RW_IO)) == X86_DR7_RW(i, X86_DR7_RW_IO))
1912	{
1913	SVM_EVENT Event;
1914
1915	Assert(CPUMIsGuestDebugStateActive(pVM));
1916
1917	/* Clear all breakpoint status flags and set the one we just hit. */
1918	pCtx->dr[6] &= ~(X86_DR6_B0\|X86_DR6_B1\|X86_DR6_B2\|X86_DR6_B3);
1919	pCtx->dr[6] \|= (uint64_t)RT_BIT(i);
1920
1921	/* Note: AMD64 Architecture Programmer's Manual 13.1:
1922	* Bits 15:13 of the DR6 register is never cleared by the processor and must be cleared by software after
1923	* the contents have been read.
1924	*/
1925	pVMCB->guest.u64DR6 = pCtx->dr[6];
1926
1927	/* X86_DR7_GD will be cleared if drx accesses should be trapped inside the guest. */
1928	pCtx->dr[7] &= ~X86_DR7_GD;
1929
1930	/* Paranoia. */
1931	pCtx->dr[7] &= 0xffffffff; /* upper 32 bits reserved */
1932	pCtx->dr[7] &= ~(RT_BIT(11) \| RT_BIT(12) \| RT_BIT(14) \| RT_BIT(15)); /* must be zero */
1933	pCtx->dr[7] \|= 0x400; /* must be one */
1934
1935	pVMCB->guest.u64DR7 = pCtx->dr[7];
1936
1937	/* Inject the exception. */
1938	Log(("Inject IO debug trap at %RGv\n", (RTGCPTR)pCtx->rip));
1939
1940	Event.au64[0] = 0;
1941	Event.n.u3Type = SVM_EVENT_EXCEPTION; /* trap or fault */
1942	Event.n.u1Valid = 1;
1943	Event.n.u8Vector = X86_XCPT_DB;
1944
1945	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
1946
1947	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1948	goto ResumeExecution;
1949	}
1950	}
1951	}
1952
1953	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
1954	goto ResumeExecution;
1955	}
1956	Log2(("EM status from IO at %RGv %x size %d: %Rrc\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, uIOSize, rc));
1957	break;
1958	}
1959
1960	#ifdef VBOX_STRICT
1961	if (rc == VINF_IOM_HC_IOPORT_READ)
1962	Assert(IoExitInfo.n.u1Type != 0);
1963	else if (rc == VINF_IOM_HC_IOPORT_WRITE)
1964	Assert(IoExitInfo.n.u1Type == 0);
1965	else
1966	AssertMsg(RT_FAILURE(rc) \|\| rc == VINF_EM_RAW_EMULATE_INSTR \|\| rc == VINF_EM_RAW_GUEST_TRAP \|\| rc == VINF_TRPM_XCPT_DISPATCHED, ("%Rrc\n", rc));
1967	#endif
1968	Log2(("Failed IO at %RGv %x size %d\n", (RTGCPTR)pCtx->rip, IoExitInfo.n.u16Port, uIOSize));
1969	break;
1970	}
1971
1972	case SVM_EXIT_HLT:
1973	/** Check if external interrupts are pending; if so, don't switch back. */
1974	pCtx->rip++; /* skip hlt */
1975	if ( pCtx->eflags.Bits.u1IF
1976	&& VM_FF_ISPENDING(pVM, (VM_FF_INTERRUPT_APIC\|VM_FF_INTERRUPT_PIC)))
1977	goto ResumeExecution;
1978
1979	rc = VINF_EM_HALT;
1980	break;
1981
1982	case SVM_EXIT_RSM:
1983	case SVM_EXIT_INVLPGA:
1984	case SVM_EXIT_VMRUN:
1985	case SVM_EXIT_VMMCALL:
1986	case SVM_EXIT_VMLOAD:
1987	case SVM_EXIT_VMSAVE:
1988	case SVM_EXIT_STGI:
1989	case SVM_EXIT_CLGI:
1990	case SVM_EXIT_SKINIT:
1991	{
1992	/* Unsupported instructions. */
1993	SVM_EVENT Event;
1994
1995	Event.au64[0] = 0;
1996	Event.n.u3Type = SVM_EVENT_EXCEPTION;
1997	Event.n.u1Valid = 1;
1998	Event.n.u8Vector = X86_XCPT_UD;
1999
2000	Log(("Forced #UD trap at %RGv\n", (RTGCPTR)pCtx->rip));
2001	SVMR0InjectEvent(pVM, pVMCB, pCtx, &Event);
2002
2003	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
2004	goto ResumeExecution;
2005	}
2006
2007	/* Emulate in ring 3. */
2008	case SVM_EXIT_MSR:
2009	{
2010	uint32_t cbSize;
2011
2012	/* Note: the intel manual claims there's a REX version of RDMSR that's slightly different, so we play safe by completely disassembling the instruction. */
2013	Log(("SVM: %s\n", (pVMCB->ctrl.u64ExitInfo1 == 0) ? "rdmsr" : "wrmsr"));
2014	rc = EMInterpretInstruction(pVM, CPUMCTX2CORE(pCtx), 0, &cbSize);
2015	if (rc == VINF_SUCCESS)
2016	{
2017	/* EIP has been updated already. */
2018
2019	/* Only resume if successful. */
2020	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
2021	goto ResumeExecution;
2022	}
2023	AssertMsg(rc == VERR_EM_INTERPRETER, ("EMU: %s failed with %Rrc\n", (pVMCB->ctrl.u64ExitInfo1 == 0) ? "rdmsr" : "wrmsr", rc));
2024	break;
2025	}
2026
2027	case SVM_EXIT_MONITOR:
2028	case SVM_EXIT_RDPMC:
2029	case SVM_EXIT_PAUSE:
2030	case SVM_EXIT_MWAIT_UNCOND:
2031	case SVM_EXIT_MWAIT_ARMED:
2032	case SVM_EXIT_TASK_SWITCH: /* can change CR3; emulate */
2033	rc = VINF_EM_RAW_EXCEPTION_PRIVILEGED;
2034	break;
2035
2036	case SVM_EXIT_SHUTDOWN:
2037	rc = VINF_EM_RESET; /* Triple fault equals a reset. */
2038	break;
2039
2040	case SVM_EXIT_IDTR_READ:
2041	case SVM_EXIT_GDTR_READ:
2042	case SVM_EXIT_LDTR_READ:
2043	case SVM_EXIT_TR_READ:
2044	case SVM_EXIT_IDTR_WRITE:
2045	case SVM_EXIT_GDTR_WRITE:
2046	case SVM_EXIT_LDTR_WRITE:
2047	case SVM_EXIT_TR_WRITE:
2048	case SVM_EXIT_CR0_SEL_WRITE:
2049	default:
2050	/* Unexpected exit codes. */
2051	rc = VERR_EM_INTERNAL_ERROR;
2052	AssertMsgFailed(("Unexpected exit code %x\n", exitCode)); /* Can't happen. */
2053	break;
2054	}
2055
2056	end:
2057
2058	/* Signal changes for the recompiler. */
2059	CPUMSetChangedFlags(pVM, CPUM_CHANGED_SYSENTER_MSR \| CPUM_CHANGED_LDTR \| CPUM_CHANGED_GDTR \| CPUM_CHANGED_IDTR \| CPUM_CHANGED_TR \| CPUM_CHANGED_HIDDEN_SEL_REGS);
2060
2061	/* If we executed vmrun and an external irq was pending, then we don't have to do a full sync the next time. */
2062	if (exitCode == SVM_EXIT_INTR)
2063	{
2064	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatPendingHostIrq);
2065	/* On the next entry we'll only sync the host context. */
2066	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_HOST_CONTEXT;
2067	}
2068	else
2069	{
2070	/* On the next entry we'll sync everything. */
2071	/** @todo we can do better than this */
2072	/* Not in the VINF_PGM_CHANGE_MODE though! */
2073	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_ALL;
2074	}
2075
2076	/* translate into a less severe return code */
2077	if (rc == VERR_EM_INTERPRETER)
2078	rc = VINF_EM_RAW_EMULATE_INSTR;
2079
2080	STAM_PROFILE_ADV_STOP(&pVCpu->hwaccm.s.StatExit, x);
2081	return rc;
2082	}
2083
2084	/**
2085	* Enters the AMD-V session
2086	*
2087	* @returns VBox status code.
2088	* @param pVM The VM to operate on.
2089	* @param pVCpu The VM CPU to operate on.
2090	* @param pCpu CPU info struct
2091	*/
2092	VMMR0DECL(int) SVMR0Enter(PVM pVM, PVMCPU pVCpu, PHWACCM_CPUINFO pCpu)
2093	{
2094	Assert(pVM->hwaccm.s.svm.fSupported);
2095
2096	LogFlow(("SVMR0Enter cpu%d last=%d asid=%d\n", pCpu->idCpu, pVCpu->hwaccm.s.idLastCpu, pVCpu->hwaccm.s.uCurrentASID));
2097	pVCpu->hwaccm.s.fResumeVM = false;
2098
2099	/* Force to reload LDTR, so we'll execute VMLoad to load additional guest state. */
2100	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_LDTR;
2101
2102	return VINF_SUCCESS;
2103	}
2104
2105
2106	/**
2107	* Leaves the AMD-V session
2108	*
2109	* @returns VBox status code.
2110	* @param pVM The VM to operate on.
2111	* @param pVCpu The VM CPU to operate on.
2112	* @param pCtx CPU context
2113	*/
2114	VMMR0DECL(int) SVMR0Leave(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx)
2115	{
2116	SVM_VMCB pVMCB = (SVM_VMCB )pVCpu->hwaccm.s.svm.pVMCB;
2117
2118	Assert(pVM->hwaccm.s.svm.fSupported);
2119
2120	/* Save the guest debug state if necessary. */
2121	if (CPUMIsGuestDebugStateActive(pVM))
2122	{
2123	CPUMR0SaveGuestDebugState(pVM, pVCpu, pCtx, false /* skip DR6 */);
2124
2125	/* Intercept all DRx reads and writes again. Changed later on. */
2126	pVMCB->ctrl.u16InterceptRdDRx = 0xFFFF;
2127	pVMCB->ctrl.u16InterceptWrDRx = 0xFFFF;
2128
2129	/* Resync the debug registers the next time. */
2130	pVCpu->hwaccm.s.fContextUseFlags \|= HWACCM_CHANGED_GUEST_DEBUG;
2131	}
2132	else
2133	Assert(pVMCB->ctrl.u16InterceptRdDRx == 0xFFFF && pVMCB->ctrl.u16InterceptWrDRx == 0xFFFF);
2134
2135	return VINF_SUCCESS;
2136	}
2137
2138
2139	static int svmR0InterpretInvlPg(PVM pVM, PDISCPUSTATE pCpu, PCPUMCTXCORE pRegFrame, uint32_t uASID)
2140	{
2141	OP_PARAMVAL param1;
2142	RTGCPTR addr;
2143
2144	int rc = DISQueryParamVal(pRegFrame, pCpu, &pCpu->param1, &param1, PARAM_SOURCE);
2145	if(RT_FAILURE(rc))
2146	return VERR_EM_INTERPRETER;
2147
2148	switch(param1.type)
2149	{
2150	case PARMTYPE_IMMEDIATE:
2151	case PARMTYPE_ADDRESS:
2152	if(!(param1.flags & (PARAM_VAL32\|PARAM_VAL64)))
2153	return VERR_EM_INTERPRETER;
2154	addr = param1.val.val64;
2155	break;
2156
2157	default:
2158	return VERR_EM_INTERPRETER;
2159	}
2160
2161	/** @todo is addr always a flat linear address or ds based
2162	* (in absence of segment override prefixes)????
2163	*/
2164	rc = PGMInvalidatePage(pVM, addr);
2165	if (RT_SUCCESS(rc))
2166	{
2167	/* Manually invalidate the page for the VM's TLB. */
2168	Log(("SVMR0InvlpgA %RGv ASID=%d\n", addr, uASID));
2169	SVMR0InvlpgA(addr, uASID);
2170	return VINF_SUCCESS;
2171	}
2172	Assert(rc == VERR_REM_FLUSHED_PAGES_OVERFLOW);
2173	return rc;
2174	}
2175
2176	/**
2177	* Interprets INVLPG
2178	*
2179	* @returns VBox status code.
2180	* @retval VINF_* Scheduling instructions.
2181	* @retval VERR_EM_INTERPRETER Something we can't cope with.
2182	* @retval VERR_* Fatal errors.
2183	*
2184	* @param pVM The VM handle.
2185	* @param pRegFrame The register frame.
2186	* @param ASID Tagged TLB id for the guest
2187	*
2188	* Updates the EIP if an instruction was executed successfully.
2189	*/
2190	static int SVMR0InterpretInvpg(PVM pVM, PCPUMCTXCORE pRegFrame, uint32_t uASID)
2191	{
2192	/*
2193	* Only allow 32 & 64 bits code.
2194	*/
2195	DISCPUMODE enmMode = SELMGetCpuModeFromSelector(pVM, pRegFrame->eflags, pRegFrame->cs, &pRegFrame->csHid);
2196	if (enmMode != CPUMODE_16BIT)
2197	{
2198	RTGCPTR pbCode;
2199	int rc = SELMValidateAndConvertCSAddr(pVM, pRegFrame->eflags, pRegFrame->ss, pRegFrame->cs, &pRegFrame->csHid, (RTGCPTR)pRegFrame->rip, &pbCode);
2200	if (RT_SUCCESS(rc))
2201	{
2202	uint32_t cbOp;
2203	DISCPUSTATE Cpu;
2204
2205	Cpu.mode = enmMode;
2206	rc = EMInterpretDisasOneEx(pVM, pbCode, pRegFrame, &Cpu, &cbOp);
2207	Assert(RT_FAILURE(rc) \|\| Cpu.pCurInstr->opcode == OP_INVLPG);
2208	if (RT_SUCCESS(rc) && Cpu.pCurInstr->opcode == OP_INVLPG)
2209	{
2210	Assert(cbOp == Cpu.opsize);
2211	rc = svmR0InterpretInvlPg(pVM, &Cpu, pRegFrame, uASID);
2212	if (RT_SUCCESS(rc))
2213	{
2214	pRegFrame->rip += cbOp; /* Move on to the next instruction. */
2215	}
2216	return rc;
2217	}
2218	}
2219	}
2220	return VERR_EM_INTERPRETER;
2221	}
2222
2223
2224	/**
2225	* Invalidates a guest page
2226	*
2227	* @returns VBox status code.
2228	* @param pVM The VM to operate on.
2229	* @param pVCpu The VM CPU to operate on.
2230	* @param GCVirt Page to invalidate
2231	*/
2232	VMMR0DECL(int) SVMR0InvalidatePage(PVM pVM, PVMCPU pVCpu, RTGCPTR GCVirt)
2233	{
2234	bool fFlushPending = pVM->hwaccm.s.svm.fAlwaysFlushTLB \| pVCpu->hwaccm.s.fForceTLBFlush;
2235
2236	/* Skip it if a TLB flush is already pending. */
2237	if (!fFlushPending)
2238	{
2239	SVM_VMCB *pVMCB;
2240
2241	Log2(("SVMR0InvalidatePage %RGv\n", GCVirt));
2242	AssertReturn(pVM, VERR_INVALID_PARAMETER);
2243	Assert(pVM->hwaccm.s.svm.fSupported);
2244
2245	/* @todo SMP */
2246	pVMCB = (SVM_VMCB *)pVM->aCpus[0].hwaccm.s.svm.pVMCB;
2247	AssertMsgReturn(pVMCB, ("Invalid pVMCB\n"), VERR_EM_INTERNAL_ERROR);
2248
2249	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatFlushPageManual);
2250	SVMR0InvlpgA(GCVirt, pVMCB->ctrl.TLBCtrl.n.u32ASID);
2251	}
2252	return VINF_SUCCESS;
2253	}
2254
2255
2256	/**
2257	* Invalidates a guest page by physical address
2258	*
2259	* @returns VBox status code.
2260	* @param pVM The VM to operate on.
2261	* @param pVCpu The VM CPU to operate on.
2262	* @param GCPhys Page to invalidate
2263	*/
2264	VMMR0DECL(int) SVMR0InvalidatePhysPage(PVM pVM, PVMCPU pVCpu, RTGCPHYS GCPhys)
2265	{
2266	Assert(pVM->hwaccm.s.fNestedPaging);
2267	/* invlpga only invalidates TLB entries for guest virtual addresses; we have no choice but to force a TLB flush here. */
2268	pVCpu->hwaccm.s.fForceTLBFlush = true;
2269	STAM_COUNTER_INC(&pVCpu->hwaccm.s.StatFlushTLBInvlpga);
2270	return VINF_SUCCESS;
2271	}
2272
2273	#if HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS)
2274	/**
2275	* Prepares for and executes VMRUN (64 bits guests from a 32 bits hosts).
2276	*
2277	* @returns VBox status code.
2278	* @param pVMCBHostPhys Physical address of host VMCB.
2279	* @param pVMCBPhys Physical address of the VMCB.
2280	* @param pCtx Guest context.
2281	* @param pVM The VM to operate on.
2282	* @param pVCpu The VMCPU to operate on.
2283	*/
2284	DECLASM(int) SVMR0VMSwitcherRun64(RTHCPHYS pVMCBHostPhys, RTHCPHYS pVMCBPhys, PCPUMCTX pCtx, PVM pVM, PVMCPU pVCpu)
2285	{
2286	return SVMR0Execute64BitsHandler(pVM, pVCpu, pCtx, pVM->hwaccm.s.pfnVMXGCStartVM64);
2287	}
2288
2289	/**
2290	* Executes the specified handler in 64 mode
2291	*
2292	* @returns VBox status code.
2293	* @param pVM The VM to operate on.
2294	* @param pVCpu The VMCPU to operate on.
2295	* @param pCtx Guest context
2296	* @param pfnHandler RC handler
2297	*/
2298	VMMR0DECL(int) SVMR0Execute64BitsHandler(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, RTRCPTR pfnHandler)
2299	{
2300	int rc;
2301	RTCCUINTREG uFlags;
2302
2303	/* @todo This code is not guest SMP safe (hyper context) */
2304	AssertReturn(pVM->cCPUs == 1, VERR_ACCESS_DENIED);
2305
2306	uFlags = ASMIntDisableFlags();
2307
2308	CPUMSetHyperESP(pVM, VMMGetStackRC(pVM));
2309	CPUMSetHyperEIP(pVM, pfnHandler);
2310
2311	/* Call switcher. */
2312	rc = pVM->hwaccm.s.pfnHost32ToGuest64R0(pVM);
2313
2314	ASMSetFlags(uFlags);
2315	return rc;
2316	}
2317
2318	#endif /* HC_ARCH_BITS == 32 && defined(VBOX_WITH_64_BITS_GUESTS) */

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source: vbox/trunk/src/VBox/VMM/VMMR0/HWSVMR0.cpp@ 14945

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